Hold Enough Tennis Balls: The Tennis Ball Dropping Machine with multitracks can hold 33 tennis balls. No need to pick up the balls often.
Adjustable Height: The height of the tennis ball dropping machine can be adjusted, so you can adjust the height of the rebound of the ball. You can do forehand exercise, backhand exercise, volley practice, etc.
Proper Frequency: The frequency of dropping of the ball is about 2 seconds. You have time to adjust your body to swing your tennis racket.
No Power Supply Needed: Using this machine, no power supply is needed. You can practise playing tennis in any proper places.
Wide Application: The Tennis Machine is suitable for almost all tennis balls except one kind whose diameter is 7.5cm.