Take your game to new heights with our Launch Master personal launch monitor. This compact device uses Doppler radar technology to accurately measure essential metrics like Carry Distance, Swing Speed, Ball Speed and Smash Factor with clear audible readouts on every shot. Whether you are practicing indoors or grinding on the range, the Launch Master is your key to unlocking your full golfing potential! Clear audible distance readout. Doppler radar technology. Measures carry distance, swing speed, ball speed, smash factor. Measuring range: 30-420 yards. Club and loft angle selectable. Compact design for easy storage. Hardshell carry case includes. Batteries included: 4 x AA.