Know the range, and shoot the exact pin with minimal movement using Xero bow sights. Theyre the first bow-mounted digital laser range finders and targeting display systems that measure the angle-compensated distance to your target and provide an LED pin for the shot even on those in-between yardages. LED pins automatically adjust brightness to conditions and allow you to see your target, unobstructed by physical pins. A single-button trigger lets you range at rest or full draw to game up to 100 yards away or to reflective targets up to 300 yards.