The bushnell velocity is a multi functional speed gun for all kinds of sports enthusiasts.Clock tennis serve speeds baseball pitches downhill skiers cars (up to 200 mph) with incredible accuracy.Easy to use - bushnell point and shoot pistol grip a large clear lcd radar gun display displays fastest speed once trigger is released a laser radar with +/- one mph accuracy and the it requires 2 c batteries (not included). Type: Radar Gun Function: Digital Signal Processing Channels: +/- 1 MPH Range: 90-1500 ft Battery: C Screen Type: LCD Display Backlight: No