3.portable and can be taken anywhere you like to practice
4.best partner for practice and teaching tennis
1 Remote control with two line function(wide,middle,narrow),three line functions.
2 One button to choose six kinds of cross-line ball .
3 One button to choose different horizontal ball.
4 One button to choose different vertical elevation ball.
5 Internal battery makes the machine more convenient.
6 Double S ball dividing system makes the ball shooting more smoothly.
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