Alpen Optics Binoculars

ALPEN OPTICS Chisos 8x25 ED Binoculars with PXA Coating

Product informationen

Compact yet powerful – the Chisos 8x25 binoculars from ALPEN OPTICS combine premium ED glass, exceptional image quality, and a rugged design. Their handy size makes them the perfect companion for nature observation, travel, hunting, and outdoor adventures.

Short & crisp

  • Binoculars with 8x magnification for sharp, steady images
  • ED glass (Extra-low Dispersion) for accurate colours and outstanding image sharpness
  • PXA phase coating for superb contrast and clarity
  • Fully multi-coated lenses for optimal light transmission
  • Lightweight, compact design – easy to carry and ideal for travel
  • Waterproof housing for reliable performance in any weather
  • Durable rubber armour for a secure grip and protection against shocks
  • Twist-up eyecups for comfortable use, even with glasses
  • The ultimate companion for nature observation, travel, hunting, and outdoor activities

A compact all-rounder for every adventure

The Chisos 8x25 strikes the perfect balance between portability and performance. With 8x magnification, it delivers crystal-clear details, making it ideal for birdwatching, hiking, or stalking. Lightweight and compact, it easily fits into any pocket, so you're always ready for action.

Premium ED glass for stunning visuals

High-quality ED (Extra-low Dispersion) glass minimises chromatic aberration, ensuring vivid colours and razor-sharp images. The prisms made from BK-7 glass feature a PXA phase coating that enhances sharpness and contrast, while the fully multi-coated lenses maximise light transmission to deliver bright, clear views, even in low-light conditions.

Built for the great outdoors

Designed to perform in any weather, the Chisos 8x25 is equipped with a waterproof housing that protects the optics from moisture. Its durable rubber armour provides a secure grip and shields the binoculars from impacts and scratches.

Perfect for glasses wearers

Glasses wearers can also enjoy a full field of view with the Chisos 8x25. Twist-up eyecups ensure comfortable use, while the built-in dioptre adjustment allows the binoculars to be customised to suit individual eyesight needs.

Deluxe warranty

Good prospects for frequent observers - with ALPEN's extended guarantee - More information

Crystal-clear images with premium quality optics

Unlike the standard BK-7, the optics are made from BaK-4 glass (barium crown glass) that produces even sharper and brighter images. The high-quality BaK-4 glass optics are used in all ALPEN Optics products sold in Europe.

More light for clearer images

The optics are fully coated with a premium multi-layer coating, which increases the light transmission to up to 95% to produce stunningly bright images.

Weatherproof design

The binoculars are filled with nitrogen, which prevents the inside of the lenses from fogging up and obstructing your view during abrupt changes in temperature.

Watertight design

Thanks to the waterproof housing that prevents liquids from reaching the inside of the optics, you don’t need to worry about heavy rain or dropping the binoculars in a puddle.

Easily adjustable for glasses wearers

Thanks to the twist-up eyecups, the design is also suitable for people who wear glasses. The distance between your eyes and the lenses can be easily adjusted to allow you to see the complete field of view.

Fine tune to your vision

The built-in dioptre adjustment allows you to quickly adjust the optics to your vision and compensate for differences between your left and right eyes.

Tripod connection thread

Thanks to the tripod connection thread, the optics can be quickly mounted on a tripod so that you can enjoy shake-free images of animals or nature.

Bright images, even on dark days

The binoculars feature a premium HR metal prism coating that significantly increases the light transmission and lets more light into your eyes. The result: bright and impressive images, even in challenging light conditions.

Special coating for more clarity and contrast

Thanks to the first-class PXA phase coating, these binoculars allow you to take in every detail in crystal-clear, high-contrast images.

Nitrogen filling

The temperature can change rapidly when you’re out in the wild. To prevent the lenses from fogging up on the inside and obstructing your view, the optics are filled with nitrogen.

Technical Data


Field of application
Hunting, Travel & Sports, Birdwatching & Nature observation, Hiking
Magnification 8 x
Type Roof
Objective lens diameter 25 mm
Type of coating PXA + UBX
Color of coating Sorry, your browser does not support inline SVG.
Light intensity 27,56
Twilight factor 18,33
Field of view (1000 m) 140 m
Close up from 5 m
Prisms BaK-4
Water Proof Yes, 1 m / 30 min
Dimensions (L x W x H) 106 x 473 x 101 mm
Weight 268 g
Tripod adapter thread No
Accessories Nylon carrying bag with carrying strap, dust cover for eyepiece and objective lenses, attached to binoculars

Instruction manual

Download EN DE FR ES NL IT

Manual_15185-15186_Chisos-Binoculars_en-de-fr-es-nl-it_ALPEN_v122024a.pdf
Product information "ALPEN OPTICS Chisos 8x25 ED Binoculars with PXA Coating"
Compact yet powerful – the Chisos 8x25 binoculars from ALPEN OPTICS combine premium ED glass, exceptional image quality, and a rugged design. Their handy size makes them the perfect companion for nature observation, travel, hunting, and outdoor adventures.

A compact all-rounder for every adventure

The Chisos 8x25 strikes the perfect balance between portability and performance. With 8x magnification, it delivers crystal-clear details, making it ideal for birdwatching, hiking, or stalking. Lightweight and compact, it easily fits into any pocket, so you're always ready for action.

Premium ED glass for stunning visuals

High-quality ED (Extra-low Dispersion) glass minimises chromatic aberration, ensuring vivid colours and razor-sharp images. The prisms made from BK-7 glass feature a PXA phase coating that enhances sharpness and contrast, while the fully multi-coated lenses maximise light transmission to deliver bright, clear views, even in low-light conditions.

Built for the great outdoors

Designed to perform in any weather, the Chisos 8x25 is equipped with a waterproof housing that protects the optics from moisture. Its durable rubber armour provides a secure grip and shields the binoculars from impacts and scratches.

Perfect for glasses wearers

Glasses wearers can also enjoy a full field of view with the Chisos 8x25. Twist-up eyecups ensure comfortable use, while the built-in dioptre adjustment allows the binoculars to be customised to suit individual eyesight needs.
Body armouring: Rubber
Body material: Polycarbonate
Colour: green/black
Colour of coating: green
Dust protection caps: for eyepiece and objective, pairs removable
Eyecups: TwistUp eyecups
Focusing system: Central focus wheel
Level of protection: IPX7
Material prisms: BK-7, ED Glass
Optical design: Roof
PREMIUM Warranty 9): Yes
Product Family [Binoculars]: Chisos
Type [Binoculars]: Folding Binoculars
Type of coating: Fully multi-coated, PXA Phase Coating