Features:Fill the serving machine set ball container with table tennis and hold approximately 110 ping-pong balls.Twist the ball button to make the ball suitable for you.Twist the frequency button, the modulation is best for the service frequencyAdjust the position of the machine according to your own preferencesSpecifications:Ball out frequency:40-70/ minutesBall speed:4-40M/SRated power:36WRated voltage:110VArc adjust:7 angle settingSpin direction:2 wheels drive (multi-spin, up and down, right and left)Dropping:Fixed droppingOut-ball frequency:0-5 level can be adjustedSwing frequency:0-5 level swing speed adjustBall switch:Short ball/long ball switchLoad ball:More than 100pcsPackage Includes:1 x Table Tennis Robots