Sig Sauer Ballistic Data Xchange rangefinder, crossbow scope, and app have transformed hunting with its unprecedented simplicity and accuracy. Combines the power of applied ballistics data with Bluetooth technology allowing you to get the most accurate ethical shot. The scope includes KILO 1600 BDX, motion activated time-out, the most advanced optics available and a 100+ hour battery life. The rangefinder has a magnification of 6X, 22mm objective lens, 6&'; field view and a CR2 battery.