Target something greater from two apex leaders in crossbow accuracy. The RavinA(R) integrated XeroA(R) X1i Crossbow Scope is customized exclusively for Ravin from GarminA(R), and optimized for your Ravin crossbow model. Sighting in the Xero X1i scope is quick, easy, and automatic. Simply mount the scope, select your Ravin model, and sight-in at 20 yards- the precise digital aimpoints are pre-calibrated. Garmin Xero X1i's advanced processor does the rest. It's a fusion of accuracy unlike anything the world has seen. This high-performance upgrade increases deadly accuracy and eliminates the need for a rangefinder, saving precious ounces and unnecessary gear. The X1i is preloaded with the ballistics for every model ever made by Ravin except the R18: R9/R10/R15/R20/R26/R29/R5X/R10X/R26X/R29X/R500.