With the Garmin Xero X1i scope you can range game targets up to 250 yards away with the built in rangefinder and use digital aim points automatically calibrated to your crossbow setup. Features MicroUSB interface; electronic level; compass; 3.5X magnification; Laser Locate feature lets you mark where your shot was taken and other important points after that; Steady Aim and Aim Point Level give you confidence that each shot will find its mark; precise aim points for multiple crossbow setups and easily switch between them. The Silent Range button lets you mount the button in the best location for your grip so one finger can silently activate the laser range finder to give you the distance and exact aim point you need for the shot. Aiming accuracy of 1/2 MOA. Includes wired standard length range finder trigger lens covers MicroUSB cable two AAA lithium batteries wrench and tape.