This is a new, unused item that has been stored at home. Recommended by tour pro coach Yuji Naito! Head speed increases rapidly! When you understand the correct release point, the clubhead will run through impact! 《Materials》 【Head/Slider】ABS resin, PE, aluminum, etc. (Built-in CR lithium-ion battery) 【Shaft】Carbon 【Grip】Rubber 《Weight》350g 《Length》Total length 110cm (equivalent to 43 inches) Grip and address as you would with a regular club. (Do not place the speed meter at the tip on the ground) When you swing, the part in the middle of the shaft moves to the tip. That is the release point. You can learn the correct release through sound and feel. Also, you can enjoy practicing continuously because you can check the data to see if your head speed is actually increasing. It teaches you the correct release point through sound and feel. When you swing, the part in the middle of the shaft moves, and you can feel a slight impact with a "click" sound. The intensity can be adjusted for each swing speed: women, seniors, and advanced players. You can set the intensity of the moving parts according to each swing speed. If the release point is early, the head speed will not increase. When you grasp the correct release, your head speed will naturally increase, and your distance will improve. The head speed is displayed on the speed meter at the tip. "m/s" display JAN code 4549542165588 ★07072404