The dark blue 10×25 10×25 H2O Compact Binoculars from Bushnell are designed for mid-range use in and around the water, with an anti-reflection fully multicoated lens system and BAK4 roof prism optical path designed to work together and transmit clear images with enhanced contrast and accurate color representation. Bushnell built them using ecologically friendly glass that is manufactured without lead to be better for the environment.

Optical Performance
Powerful 10x magnification allows for detailed observations of distant objects
25mm objectives gather more light than smaller-objective models, while ensuring the optical tubes are thin to maintain a slim form factor
Compact roof prism light path keeps the optical tubes thin for easy handling
BAK4 prisms deliver a round exit pupil, and a crisp and clear image with limited edge distortion
Anti-reflection multicoated optics maximize light transmission while improving color rendition, contrast, and clarity
Wide 61 apparent angle of view minimizes the appearance of the distracting hand-shake that is common when holding high-power optics, and presents an immersive observational experience
320-foot field of view at 1000 yards
Use and Handling
Closed-bridge configuration offers a stable platform for the internal focusing mechanism
Textured and slip-resistant low-profile center focusing knob reduces the profile and minimizes snag hazards while still being easy to reach
Right-eye dioptric correction dial helps to compensate for individual optical prescription
Twist-up eyecups for comfortable use with or without eyewear
13mm eye relief
2.5mm exit pupil
Construction Details
Ecologically friendly glass is responsibly sourced and made without using lead or arsenic
Dual hinge design allows the two optical tubes to fold and tuck under the bridge to minimize the form factor for easier packing and carrying when not in use
Lightweight and durable aluminum alloy chassis
Nitrogen-filled and O-ring sealed to be waterproof to a rating of IPX7 and resistant to internal fogging
Chassis armor with an aggressive textured design offers a comfortable and slip-resistant grip
Compact 4.1″ long design
Light 10.7-ounce weight