Helios Stellar-II 10x50 Observation Binoculars

Helios Stellar-II 10x50 Observation Binoculars. High quality waterproof , nitrogen filled observation binoculars, with individual eyepiece (IF)  focusing, designed for medium-to-long-range terrestrial, marine and astronomical observations. Shockproof design incorporating a robust but lightweight magnesium alloy body construction. Features BaK-4 prisms and a fully broadband multi-coated optical system. The optical system features high-transmission lens and prism coatings allowing 85% light transmission. Eyepiece design features oversized elements, generous 20mm eye-relief and fold-down rubber eyecups for spectacle-wearers. Features integral tripod mounting bush. Finished in stylish dark green and black rubber and supplied in soft storage/carrying case with padded neck strap, eyepiece rainguard and captive objective lens caps.