The Revic BR4 features the innovative Revic ballistic solver with advanced wind and earth based effects to provide accurate, ultra-fast corrections in MOA, MILS or the exclusive Shoot-To-Range for use with BDC turrets. The data rich display simplifies the shooting process and the improved ranging tools feature target discrimination and a new long range mode. Programmable via a connected Bluetooth device, and capable of Over-The-AirUpdates, the BR4 provides constant access to the latest software improvements. Simple SolutionsOnboard sensors for temperature, pressure, compass, incline/decline provide enhanced ballistic solutions at the touch of a buttonVector WindBoth base and vector wind inputs enable quick or fine-tuned wind holdsConnectWith your phone... and your targets. Bluetooth connectivity pairs with the free Revic Ops app (iOS or Android) for syncing ballistic profiles and over-the-air updates. Features Maximum Effective Range: Up to 4,000 yards On Board Ballistic Solver Stores up to 10 Ballistic Profiles Bluetooth Connectivity via Revic Ops Mobile App Magnification: 10x Dimensions: 4.85” x 1.65” x 3.25” (LxWxH) 10.0 oz (283.5 grams) LED Display Color: Red Battery: CR2 (included)