Know the range, and shoot the exact pin with minimal movement using Xero™ A1 bow sight. This bow-mounted auto-ranging digital sight automatically measures distance to the target and provides an LED pin for the shot. Find out more about Xero bow sights here: http://ift.tt/2qOpozA Xero™ bow sights Bow-mounted auto-ranging digital sight automatically measures distance to the target and provides an LED pin for the shot LED pins allow you to clearly see your target, unobstructed by physical pins Silent single-button trigger requires minimal movement; lets you range at rest or full draw up to 100 yards on game or up to 300 yards on reflective targets Customizable for single-pin and multi-pin configurations or manual pin selection 1 year of battery life with 2 lithium AAA batteries (not included) Xero A1i lets you save pin settings for various bow configurations; change from a 3-D target to a hunting configuration without readjusting the sight Laser Locate™, only available on A1i, enables use of a compatible Garmin GPS devices (sold separately) to know exactly where the target was located when the shot or range was taken Some jurisdictions regulate or prohibit the use of electronic bow sights for hunting. Always know and obey all state hunting regulations before using this device.