The Garmin Xero A1i Pro Bow Sight is an auto-ranging digital sight with dual-color LED Pins allowing you to find your distance quickly and also has Micro-adjustable Rails. The Xero A1i Pro Bow Sight also features a quick-detach feature, allowing for an easy on, easy off while traveling with your bow. This bow sight has a one-year battery life which means more time in the woods. This sight allows you not to have to guess the distance to your target as it calculates it automatically. Buy yours today at Sawyer's Country Edge.