Helios VOYAGER 25x Black monocular

VOYAGER, 10-25x42, waterproof, 6.7 - 5.8 degrees, 50.8 mm This high quality, ergonomically designed 42mm aperture waterproof monocular provides a powerful magnification range of 10x-25x. Eye relief varies between 14mm-9.5mm. Features fully multi-coated optics and high-index BaK-4 prisms. Nitrogen filled for waterproof and fog-free viewing. Superb near focus performance from as little as 50.8cm (20"). Fold-down rubber eyecup for spectacle wearers. Supplied with neckstrap and case. Colour/material: Black Rubber