Helios Stellar II 20X100 Waterproof Observation Binoculars

High quality filled observation binoculars, with individual eyepiece (IF) focusing, designed for medium-to-long-range terrestrial and astronomical observations. They are fully waterproof (IPX7 standard, 1m depth for 30 minutes) and nitrogen filled for clear fog-free operation. Incorporating a robust but lightweight magnesium alloy body construction, covered in stylish protective black rubber armouring. 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 eye-relief and fold-down rubber eyecups for spectacle-wearers. Features integral tripod mounting column and central stabilising bar. Specification: • Magnification: 20x • Object Lens Diameter: 100mm • Field of view: 3.2° • F.O.V. @ 1000M: 56m • Exit Pupil Diameter: 5mm • Eye Relief: 20mm • Interpupillary Distance: 56 to 74mm • Light Transmission: 85% • Weight: 3600g • Dimensions: 382 x 240 x 112mm • Product Code: 30150 Supplied with: • Hard storage/carrying case • Padded neck strap • Eyepiece rainguard • Objective lens caps.