The 8x42 Geovid HD-B Rangefinder Binocular from Leica fuses the image quality of a fully multicoated optical path with the functionality of a 2000-yard laser rangefinder and integrated ballistics computer. Using an array of built-in sensors, this electro-optic measures the ambient atmospheric conditions as well as the shooter's angle relative to the target. By compiling data from the laser rangefinder and environmental sensors, the ballistics computer will calculate several values that can help improve shot placement.

Leica's Advanced Ballistic Compensation (ABC) technology combines temperature and air pressure readings with rangefinder data, zeroing distance, and user-defined ballistics curve to calculate ballistic compensation values. To maximize the accuracy of compensation values, the Geovid HD-B allows the shooter to input their rifle's zero distance and select a ballistics curve corresponding to the chambered round. The HD-B is pre-loaded with 12 ABC ballistics curves for various calibers and weights, and alternative ballistics curves can be stored and uploaded using the included microSD card. An in-view LED display allows the observer to view the calculated ABC values without taking their eyes off the visual scene.

Like other Geovid series binoculars, the HD-B model has a nitrogen-filled fogproof housing as well as fully multicoated fluoride glass lenses that transmit luminous and color faithful images. Leica's phase-corrected Perger Porro prism design merges the benefits of roof and Porro designs, delivering a streamlined form factor without sacrificing depth of field or color fidelity. Exposed lens surfaces are finished with Leica's proprietary High Durable (HDC) and AquaDura lens coatings, which repel moisture and prevent dirt from adhering to the glass. These features add up to a multi-purpose handheld optic that is built for unforgiving weather conditions and low light performance.