S4015 Tennis ball shooting machine :

Function

1.Smart LCD remote control with full function(speed,frequency,horizontal angle,spin)
2.You can realize different modes of training by intelligent programming.
3.internal battery with large capacity can last 7-8 hours which allows you to have fun when playing tennis.
4.Remote control different vertical and horizontal elevation, arbitrary choice of placement
5.Random function
6.6 kinds of top and back spin adjustment
7.Remote control different vertical elevation of two line function(wide,middle,narrow)
8.One button to choose six kinds of cross-line ball 
9.One button to choose different horizontal ball.
10.One button to choose different vertical elevation ball.
11.LCD display of battery level on the machine
12.Capacity:160pcs balls