1. The electronic instrument shows the number of exercises/time, calorie function. It is user-friendly, with simple and fast adjustment according to the user;
2. It helps users on repeated practice on the back swing, down swing and finish and other correct rod swing action may have more effective calibration on the swing and level batting to prevent the head swing;
3. Its adjustable swing angle and height and stable back swing instantaneous line help to enhance the swing plane memory, prevent the knee from swinging to left and right and fixing waist and back (aiming angle) position.