Binoculars PENTAX UP 8x25 WP — 8× magnification, 25 mm objective, waterproof compact design

PENTAX UP 8x25 WP binoculars are a compact, fully multi-coated, inverted porro-prism instrument offering 8× magnification and 25 mm objectives. The dual-axis, single-body construction with synchronized interpupillary distance (IPD) adjustment and pull-up eyecups makes these binoculars a portable, easy-to-use option for travel, outdoor events and general observation. Aspherical lens elements and high-quality BaK4 prisms deliver edge-to-edge sharpness and a clear, well-illuminated image while the JIS Class 6 waterproofing and deep rubber armouring protect the optics in wet or rugged conditions.

Advantages

Fully multi-coated optics and BaK4 prisms increase light transmission and reduce flare and ghosting for a crisp, round exit pupil and improved contrast. The inverted porro-prism, inner-focus optical design minimises maintenance and protects internal elements from dust and moisture. Long eye relief and centrally located, lockable diopter adjustment provide comfortable viewing and quick, precise focus for users with or without eyeglasses. The compact, lightweight form factor and durable rubber armouring make these binoculars convenient for everyday carry and resistant to shocks.

Suitable for

• Travel and sightseeing
• Birdwatching and wildlife observation
• Outdoor events and sports
• General-purpose daytime observation

Key specifications

• Magnification: 8×
• Objective diameter: 25 mm
• Prism type: BaK4, inverted porro prism
• Optical coatings: Fully multi-coated
• Waterproof rating: JIS Class 6 (submersible)
• Design: Dual-axis single body with synchronized IPD adjustment
• Eye relief: Long eye relief with pull-up eyecups
• Diopter: Centrally located, lockable diopter adjustment

How to use

Open the binoculars and adjust the interpupillary distance by rotating the barrels until a single circular field of view appears. Set the pull-up eyecups to the desired height for use with or without eyeglasses. Focus on a target using the central focusing mechanism, then fine-tune using the lockable diopter adjustment on the central axis to compensate for differences between your eyes. After use in wet environments, rinse with fresh water and dry thoroughly before storage. Do not open the housing or attempt internal cleaning.

Usage recommendations

For best results, use these compact binoculars in daylight or low-light situations where portability and weather resistance are important; avoid exposing them to prolonged saltwater immersion and store them in a dry place when not in use.