Leica Rangemaster CRF 1600-B 40534 Determines range out of 1600 yards features scan mode AquaDura coating on external lens waterproof to 3.2 feet water depth carbon-reinforced plastic 41_2 x 21_4 x 11_4 in approx. 8.1 oz. incl. battery Eye-safe, invisible-light laser compliant with EN and FDA Class 1