Pentax Binoculars UP 10x21 (49539)

Pentax UP 10x21 binoculars are compact and lightweight, designed with an inverted porro-prism system and a durable dual-axis, single body construction. The synchronized interpupillary distance adjustment ensures comfortable and precise alignment for both eyes. Aspherical lens elements provide sharpness from edge to edge, while fully multi-coated lenses maximize light transmission and reduce glare for bright, clear images. These binoculars are suitable for a variety of uses, both indoors and outdoors, and offer excellent performance at an affordable price.

Optical Features:
Magnification: 10x
Objective lens diameter: 21 mm
Exit pupil: 2.1 mm
Eye relief: 9.5 mm
Field of view (true): 5.0°
Field of view at 1,000 m: 87 m
Close focus limit: 2.8 m
Light intensity: 4.4
Twilight factor: 14.5
Aspherical lens elements for edge-to-edge sharpness
Fully multi-coated lenses for improved clarity and reduced flare
BK-7 glass prisms

Design and Handling:
Inverted porro-prism design for a compact build
Dual-axis, single body frame for durability
Central focusing wheel for easy adjustment
Pull-out rubber eyecups, suitable for eyeglass wearers
Rubber armoring for a secure, comfortable grip
Dimensions: 83 mm (length) x 110 mm (width) x 48 mm (height)
Weight: 210 g

Additional Information:
Splash-proof (not fully waterproof)
Includes carrying case, neck strap, lens covers, and eyepiece caps
Strap fitting specific to manufacturer

Recommended Uses:
Bird watching: Moderate
Travel and sports: Very good
Theatre: Good
Astronomy: Not recommended
Hunting: Not recommended
Sailing: Not recommended

These binoculars are a practical and versatile choice for travel, sports, theatre, and everyday observation, combining sharp optics with a compact, user-friendly design.