Auto-ranging digital bow 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)