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Celestron Nature DX 8x42 Roof Prism Binoculars
Waterproof - The rugged construction provides peace of mind when outdoors in wet weather. Crisp and clear - Phase coated BaK-4 prisms for increased contrast and resolution. Brighter image - Fully multi-coated optics provide better light transmission which offers a brighter viewing experience. Eyeglass friendly - The twist eyecups provide a comfortable viewing experience and have multiple positions to suit your needs. Carry case - The included soft carry case protects your binoculars when they're not in use.
Good Stock
£159.00 £149.00
Celestron Nature DX 8x42 Roof Prism Binoculars - Black
Waterproof - The rugged construction provides peace of mind when outdoors in wet weather. Crisp and clear - Phase coated BaK-4 prisms for increased contrast and resolution. Brighter image - Multi-coated optics provide better light transmission which offers a brighter viewing experience. Eyeglass friendly - The twist eyecups provide a comfortable viewing experience and have multiple positions to suit your needs. Carry case - The included soft carry case protects your binoculars when they're not in use.
In Stock
£159.00
Celestron SkyMaster Pro ED 15x70mm Porro Binoculars
Astronomy - These are an ideal pair for those wanting to start their stargazing journey. ED glass - ED glass provides a superior viewing experience thanks to the reduction of chromatic aberrations. Bright image - The 70mm objective provides plenty of light to enter, making it ideal for night time viewing. Durable - The body is reinforced with a comfortable rubber housing. Tripod - Due to the large size and magnification, a strong tripod is required for best results. Upgrading? Check our offer for your old gear
Good Stock
£319.00 £249.00
Celestron SkyMaster Pro ED 20x80mm Porro Binoculars
Astronomy - These are an ideal pair for those wanting to start their stargazing journey. ED glass - ED glass provides a superior viewing experience thanks to the reduction of chromatic aberrations. Bright image - The 80mm objective provides plenty of light to enter, making it ideal for night time viewing. Durable - The body is reinforced with a comfortable rubber housing. Tripod - Due to the large size and magnification, a strong tripod is required for best results. Upgrading? Check our offer for your old gear
Good Stock
£399.00 £299.00
Celestron SkyMaster Pro ED 7x50mm Porro Binoculars
Amazingly versatile - These are an ideal pair for those wanting to cover a variety of observations. ED glass - ED glass provides a superior viewing experience thanks to the reduction of chromatic aberrations. Bright image - The 50mm objective provides plenty of light to enter, making it ideal for night time viewing. Durable - The body is reinforced with a comfortable rubber housing. Wide views - The 7x magnification provides a wider field of view. Upgrading? Check our offer for your old gear
In Stock
£199.00 £149.00
Celestron UpClose G2 10x25 Roof Prism Binoculars
Portable - Extremely compact size, perfect for your everyday travels. Brighter image - Multi-coated optics provide better light transmission which offers a brighter viewing experience. Rugged - Rubber armour coating helps protect against knocks and bumps. Lightweight - At 312g, you'll barely even know they're there. Carry case - The included soft carry case protects your binoculars when they're not in use.
Good Stock
£29.90
Celestron UpClose G2 8x21 Roof Prism Binoculars
Portable - Extremely compact size, perfect for your everyday travels. Brighter image - Multi-coated optics provide better light transmission which offers a brighter viewing experience. Rugged - Rubber armour coating helps protect against knocks and bumps. Lightweight - At under 230g, you'll barely even know they're there. Carry case - The included soft carry case protects your binoculars when they're not in use.
Good Stock
£29.90
Celestron Nature DX ED 8x42 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
Good Stock
£219.00 £189.00
Celestron Nature DX ED 10x50 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
In Stock
£249.00
Celestron Nature DX ED 10x42 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
In Stock
£219.00 £199.00
Celestron Nature DX 8x32 Roof Prism Binoculars
8x Magnification. 2m close focus. Field of view of 129m /1000m. Weight 510 g. Dimensions 128mm x 126mm x 46mm.
Celestron Nature DX 10x32 Roof Prism Binoculars
Waterproof - The rugged construction provides peace of mind when outdoors in wet weather. Crisp and clear - Phase coated BaK-4 prisms for increased contrast and resolution. Brighter image - Multi-coated optics provide better light transmission which offers a brighter viewing experience. Eyeglass friendly - The twist eyecups provide a comfortable viewing experience and have multiple positions to suit your needs. Carry case - The included soft carry case protects your binoculars when they're not in use.
Low Stock - order now or contact us to reserve
£129.00 £107.00
Celestron Nature DX 12X56 Roof Prism Binoculars
Waterproof - The rugged construction provides peace of mind when outdoors in wet weather. Crisp and clear - Phase coated BaK-4 prisms for increased contrast and resolution. Brighter image - Multi-coated optics provide better light transmission which offers a brighter viewing experience. Eyeglass friendly - The twist eyecups provide a comfortable viewing experience and have multiple positions to suit your needs. Carry case - The included soft carry case protects your binoculars when they're not in use. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£219.00
Celestron Nature DX 10x42 Roof Prism Binoculars
Waterproof - The rugged construction provides peace of mind when outdoors in wet weather. Crisp and clear - Phase coated BaK-4 prisms for increased contrast and resolution. Brighter image - Fully multi-coated optics provide better light transmission which offers a brighter viewing experience. Eyeglass friendly - The twist eyecups provide a comfortable viewing experience and have multiple positions to suit your needs. Carry case - The included soft carry case protects your binoculars when they're not in use.
In Stock
£159.00 £149.00
Celestron Nature DX ED 12x50 Roof Prism Binoculars
Flat field technology - Ensures edge to edge image clarity with minimal distortion. Extra low dispersion - ED glass provides high resolution and reduced chromatic aberrations. Fully multi coated optics - Maximum light transmission throughout the optical path to provide a brighter view. True to life colours - Phase and dielectric coated BaK-4 prisms provide clear and natural looking colours. Glasses friendly - Generous eye relief and twist-up eyecups with multiple stops. Upgrading? Check our offer for your old gear
Celestron Outland X 10x25 Compact Roof Prism Binoculars
Beginner friendly - The perfect balance of performance and affordability. Rugged - The rubber armoured polycarbonate chassis is lightweight, durable and waterproof. Clear views - The multi-coated optics allow for greater light transmission. BaK-4 prisms - The prisms are made of BaK-4 glass to give you enhanced colour fidelity. Carry case - The included soft carry case protects your binoculars when they're not in use. Tripod friendly - The front and side of the bag features a handy tripod or monopod mounting system.
Celestron Outland X 10x42 Roof Prism Binoculars
Beginner friendly - The perfect balance of performance and affordability. Rugged - The rubber armoured polycarbonate chassis is lightweight, durable and waterproof. Clear views - The multi-coated optics allow for greater light transmission. BaK-4 prisms - The prisms are made of BaK-4 glass to give you enhanced colour fidelity. Carry case - The included soft carry case protects your binoculars when they're not in use.
Good Stock
£99.00 £79.00
Celestron Outland X 10x50 Roof Prism Binoculars
Beginner friendly - The perfect balance of performance and affordability. Rugged - The rubber armoured polycarbonate chassis is lightweight, durable and waterproof. Clear views - The multi-coated optics allow for greater light transmission. BaK-4 prisms - The prisms are made of BaK-4 glass to give you enhanced colour fidelity. Carry case - The included soft carry case protects your binoculars when they're not in use.
Low Stock - order now or contact us to reserve
£149.00 £119.00
Celestron Outland X 8x25 Compact Roof Prism Binoculars
Beginner friendly - The perfect balance of performance and affordability. Rugged - The rubber armoured polycarbonate chassis is lightweight, durable and waterproof. Clear views - The multi-coated optics allow for greater light transmission. BaK-4 prisms - The prisms are made of BaK-4 glass to give you enhanced colour fidelity. Carry case - The included soft carry case protects your binoculars when they're not in use.
Celestron Outland X 8x42 Roof Prism Binoculars
Beginner friendly - The perfect balance of performance and affordability. Rugged - The rubber armoured polycarbonate chassis is lightweight, durable and waterproof. Clear views - The multi-coated optics allow for greater light transmission. BaK-4 prisms - The prisms are made of BaK-4 glass to give you enhanced colour fidelity. Carry case - The included soft carry case protects your binoculars when they're not in use.
In Stock
£99.00
Celestron Regal 10x42 ED Flat Field Binoculars
Flat field technology - Ensures edge to edge image clarity with minimal distortion. Extra low dispersion - ED glass provides high resolution and reduced chromatic aberrations. Fully multi coated optics - Maximum light transmission throughout the optical path to provide a brighter view. True to life colours - Phase and dielectric coated BaK-4 prisms provide clear and natural looking colours. Glasses friendly - Generous eye relief and sturdy, twist-up eyecups with multiple stops. Upgrading? Check our offer for your old gear
In Stock
£398.75 £298.75
Celestron Regal 8x42 ED Flat Field Binoculars
Flat field technology - Ensures edge to edge image clarity with minimal distortion. Extra low dispersion - ED glass provides high resolution and reduced chromatic aberrations. Fully multi coated optics - Maximum light transmission throughout the optical path to provide a brighter view. True to life colours - Phase and dielectric coated BaK-4 prisms provide clear and natural looking colours. Glasses friendly - Generous eye relief and sturdy, twist-up eyecups with multiple stops. Tripod mountable - Keep it steady with optional adapter. . Upgrading? Check our offer for your old gear
Good Stock
£398.75 £348.75
Celestron Skymaster 12x 60 Porro Prism Binoculars
12x Magnification. 18m close focus. Field of view of 92m /1000m. Weight 1111g. Dimensions 210mm x 206mm x 72mm.
Celestron Skymaster 15x70 Observation Binoculars
Large objectives - The large 70mm objective lenses provide fantastic low-light performance. Wider views - The 15x magnification provides plenty of distant details whilst offering a wider perspective . Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Easy to use - The central focussing dial and great handling make this an easy to use pair of binoculars. 43ft close-focus - These can also be used for long-range terrestrial viewing.
Good Stock
£129.00 £119.00
Celestron Skymaster 20x80 Observation Binoculars
Large objectives - The large 80mm objective lenses provide fantastic low-light performance. Deep views - The strong 20x magnification lets you view things out of this world. Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Structural reinforcement - A rigid cross-frame on the main body provides rigidity and a tripod mount. 80ft close-focus - These can also be used for long-range terrestrial viewing.
Celestron Skymaster 25x100 Observation Binoculars
Huge objectives - The gigantic 100mm objective lenses are the largest in the range, offering unrivalled low-light performance. Deep views - The strong 25x magnification lets you view things out of this world . Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Structural reinforcement - A rigid cross-frame on the main body provides rigidity and a tripod mount. 80ft close-focus - These can also be used for long-range terrestrial viewing. Upgrading? Check our offer for your old gear
In Stock
£418.75 £348.75
Celestron Skymaster 25x70 Observation Binoculars
Large objectives - The large 70mm objective lenses provide fantastic low-light performance. Detailed views - The 25x magnification allows you to get closer to distant objects. Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Easy to use - The central focussing dial and great handling make this an easy to use pair of binoculars. 75ft close-focus - These can also be used for long-range terrestrial viewing. L-series flagship range - Designed for robust handling and resistant to dust and moisture.
In Stock
£139.00
Celestron Skymaster Pro 15x70 Observation Binoculars
20x magnification porro prism binocular. 13m close focus. Field of view of 77m /1000m. Weight 2,089g. Dimensions 276.9mm x 221mm x 86.4mm. Upgrading? Check our offer for your old gear
Celestron Skymaster Pro 20x80 Observation Binoculars
Large objectives - The large 80mm objective lenses provide fantastic low-light performance. Deep views - The strong 20x magnification lets you view things out of this world. Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Waterproof design - The fully waterproof housing for use in all weather conditions provides peace of mind when unexpected weather rolls in. Finderscope ready - Detachable RSR rail for attaching an optional red dot Finderscope. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£299.00 £259.00
Celestron TrailSeeker 10x42 Roof Prism Binoculars
10x Magnification. 2m close focus. Field of view of 113m /1000m. Weight 635g. Dimensions 141mm x 130mm x 51mm. Upgrading? Check our offer for your old gear
Celestron TrailSeeker 8x42 Roof Prism Binoculars
Durable construction - The rubber coated magnesium alloy body protects your TrailSeeker binoculars from damage without weighing you down. Fully multi coated optics - Maximum light transmission throughout the optical path to provide a brighter view. Crisp and clear - The high quality BaK-4 prisms and multi-coated optics provide enhanced contrast. Glasses friendly - Generous eye relief and sturdy, twist-up eyecups with multiple stops. Carry case - The included soft carry case protects your binoculars when they're not in use. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£269.00 £249.00
Celestron TrailSeeker ED 10x32 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£298.75 £238.75
Celestron Trailseeker ED 10x42 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
Good Stock
£369.00 £279.00
Celestron TrailSeeker ED 8x32 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£298.75 £248.75
Celestron Trailseeker ED 8x42 Roof Prism Binoculars
ED glass - Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration. Multi-coated optics - This allows the glass to deliver maximum light transmission through the optical path. BAK 4 - Roof prisms and BAK 4 glass provide a clear viewing experience. Comfortable - The rubber coated chassis provides a firm and comfortable grip. Sealed - Water and fog proof thanks to the nitrogen purged optics. Upgrading? Check our offer for your old gear
Good Stock
£369.00 £349.00
Celestron Ultima 10x42mm Porro Prism Binoculars
10x Magnification. 2.5m close focus. Field of view of 114m /1000m. Weight 620g. Dimensions 135mm x 175mm x 52mm .
Nikon MONARCH HG 10x30 Binoculars
Outstanding clarity - Built from the ground up to achieve class-ruling optical performance. Superior build quality - The strong and robust nitrogen-filled body gives superior waterproof performance to a depth of up to 5 m for as long as 10 minutes. Comfortable viewing - Long eye relief ensures a clear field of view even if you’re wearing glasses. Wide views - The Monarch HG's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
Nikon MONARCH HG 10x42 Binoculars
Outstanding clarity - Built from the ground up to achieve class-ruling optical performance. Superior build quality - The strong and robust nitrogen-filled body gives superior waterproof performance to a depth of up to 5 m for as long as 10 minutes. Comfortable viewing - Long eye relief ensures a clear field of view even if you’re wearing glasses. Wide views - The Monarch HG's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear0% FinanceNew Low Price
In Stock
Nikon MONARCH HG 8x30 Binoculars
Outstanding clarity - Built from the ground up to achieve class-ruling optical performance. Superior build quality - The strong and robust nitrogen-filled body gives superior waterproof performance to a depth of up to 5 m for as long as 10 minutes. Comfortable viewing - Long eye relief ensures a clear field of view even if you’re wearing glasses. Wide views - The Monarch HG's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
Nikon MONARCH HG 8x42 Binoculars
Outstanding clarity - Built from the ground up to achieve class-ruling optical performance. Superior build quality - The strong and robust nitrogen-filled body gives superior waterproof performance to a depth of up to 5 m for as long as 10 minutes. Comfortable viewing - Long eye relief ensures a clear field of view even if you’re wearing glasses. Wide views - The Monarch HG's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
Nikon Prostaff P3 10x30 Binoculars
Perfect entry - Prostaff P3's are a fantastic entry point to the world of binoculars. A bright and beautiful view - Multilayer coated lenses and prisms, plus a high-reflective silver-alloy prism coating, ensure a crisp and enjoyable viewing experience. Made for the outdoors - Waterproof and fog-free with O-ring seals and nitrogen gas purged optics provide confidence in all weathers. Comfortable viewing - Every PROSTAFF P3 model boasts long eye relief (15 mm or more), making them perfect for glasses wearers. Safe keeping - A soft padded case is provided to keep your P3's safe. Weight 470g.
Nikon Prostaff P3 10x42 Binoculars
Perfect entry - Prostaff P3's are a fantastic entry point to the world of binoculars. A bright and beautiful view - Multilayer coated lenses and prisms, plus a high-reflective silver-alloy prism coating, ensure a crisp and enjoyable viewing experience. Made for the outdoors - Waterproof and fog-free with O-ring seals and nitrogen gas purged optics provide confidence in all weathers. Comfortable viewing - Every PROSTAFF P3 model boasts long eye relief (15 mm or more), making them perfect for glasses wearers. Safe keeping - A soft padded case is provided to keep your P3's safe. Weight 600g.
Good Stock
£189.00 £129.00
Nikon Prostaff P3 8x30 Binoculars
Ideal starter bino's - Prostaff P3's are a fantastic entry point to the world of binoculars. A bright and beautiful view - Multilayer coated lenses and prisms, plus a high-reflective silver-alloy prism coating, ensure a crisp and enjoyable viewing experience. Made for the outdoors - Waterproof and fog-free with O-ring seals and nitrogen gas purged optics provide confidence in all weathers. Comfortable viewing - Every PROSTAFF P3 model boasts long eye relief (15 mm or more), making them perfect for glasses wearers. Safe keeping - A soft padded case is provided to keep your P3's safe.
No stock on site. Please allow 20 days for delivery
£149.00 £99.00
Nikon Prostaff P3 8x42 Binoculars
Perfect entry - Prostaff P3's are a fantastic entry point to the world of binoculars. A bright and beautiful view - Multilayer coated lenses and prisms, plus a high-reflective silver-alloy prism coating, ensure a crisp and enjoyable viewing experience. Made for the outdoors - Waterproof and fog-free with O-ring seals and nitrogen gas purged optics provide confidence in all weathers. Comfortable viewing - Every PROSTAFF P3 model boasts long eye relief (15 mm or more), making them perfect for glasses wearers. Safe keeping - A soft padded case is provided to keep your P3's safe. Weight 590g.
In Stock
£179.00 £119.00
Nikon Prostaff P7 10x30 Binoculars
Sharp and bright - Multilayer coated lenses and prisms ensure extraordinary brightness and rich natural colours. Built tough - Rubber armour gives a firm grip, and protects your PROSTAFF P7 from bumps, knocks, and drops. Sealed - Waterproof and fog-free with O-ring seals and nitrogen gas. Wide views - The Prostaff P7's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
In Stock
£218.75 £178.75
Nikon Prostaff P7 10x42 Binoculars
Sharp and bright - Multilayer coated lenses and prisms ensure extraordinary brightness and rich natural colours. Built tough - Rubber armour gives a firm grip, and protects your PROSTAFF P7 from bumps, knocks, and drops. Sealed - Waterproof and fog-free with O-ring seals and nitrogen gas. Wide views - The Prostaff P7's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
In Stock
£259.00 £249.00
Nikon Prostaff P7 8x30 Binoculars
Sharp and bright - Multilayer coated lenses and prisms ensure extraordinary brightness and rich natural colours. Built tough - Rubber armour gives a firm grip, and protects your PROSTAFF P7 from bumps, knocks, and drops. Sealed - Waterproof and fog-free with O-ring seals and nitrogen gas. Wide views - The Prostaff P7's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
Nikon Prostaff P7 8x42 Binoculars
Sharp and bright - Multilayer coated lenses and prisms ensure extraordinary brightness and rich natural colours. Built tough - Rubber armour gives a firm grip, and protects your PROSTAFF P7 from bumps, knocks, and drops. Sealed - Waterproof and fog-free with O-ring seals and nitrogen gas. Wide views - The Prostaff P7's offer a wide field of view, making it easier to locate and track subjects. Perfect focus - Once you’ve set the dioptre, you can lock it in place to prevent unintentional adjustment. Upgrading? Check our offer for your old gear
Low Stock - order now or contact us to reserve
£239.00 £229.00
Browse our stock of Binoculars, Monoculars, Telescopes, and Spotting Scopes. We have something to suit everyone, from the budding Urban Birder to the junior Astronomer. We stock optics from Swarovski, Canon, Steiner, Zeiss, Nikon, Celestron, and Vortex.
The specification, eg 8x40, describes the magnification followed by the diameter of the front glass in millimetres. The first number divided into the second gives the light gathering power. Thus, a pair of 8x32 will be as bright as a pair of 10x40 but smaller and with less magnification.
Sizes up to 8x25 or 10x25 will slip into a trouser pocket. Cost, size and weight all go up as either number increases. It also becomes increasingly difficult to hold them steady without a support. All high-quality Binoculars and Spotting scopes come with a tripod fitting.
If you are able to call into either shop and discuss your requirement, we will be more than happy guide you towards the best compromise between magnification, brightness, weight, cost and quality.
Which is better? A spotting scope or binoculars?
For serious, long-range viewing, maintaining light gathering power at high magnifications involves a fair amount of glass that is both heavy and expensive. Making do with the view through just one eye has its advantages. Also, the stereo vision obtained from using both eyes diminishes with distance. A serious birder will mostly commonly be seen with a spotting scope, firmly attached to a tripod, slung over one shoulder en-route (excuse my French) to the next location.
Swarovski are the Spotting-Scope masters and their modular system is the pinnacle. In recent years, they have introduced the BTX binocular eyepiece so that you can pretty much have the best of both worlds.