This document provides technical specifications for two rangefinder models, the Leica Geovid 8 x 42 HD-R and the Leica Geovid 10 x 42 HD-R. Both models are waterproof up to 16.5 feet, use a 3V lithium battery that provides power for approximately 2000 measurements, and have features like an LED display, internal focusing, HDC and AquaDura coatings, and a ballistic system for measuring equivalent horizontal distances up to 600 yards. The main differences are the magnifications of 8x vs 10x and resulting exit pupils and fields of view specifications.