Capture and instantly review your match/practice performance. Play tracking mode for analyzing power, consistency and intensity and tracking your improvement over time. 3D serve mode for evaluating racket speed, ball speed potential, spin, backswing time, and impact time on every shot. Replay and review your serve in 360 degrees from any angle. Includes Zepp sensor, racket mount, and charging cord. Send data wirelessly to any Android/iOS device via Zepp app found in App Store or google play.