Staneg Tenis Antrenman Yardımc

With Staneg App, you can connect to the device's Bluetooth connection; Speed: Allows the ball to be launched faster or slower. Spin: +1 and +2 topspin ball, -1 and -2 as a backspin to throw. Ball frequency: Adjusts the pitch of the ball with a frequency of 2-10 seconds. Vertical: Changes the vertic