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 frequency -Adjust the position of the machine according to your own preferences Specifications: - Ball out frequency:40-70/ minutes - Ball speed:4-40M/S - Rated power:36W - Rated voltage:110V - Arc adjust:7 angle setting - Spin direction:2 wheels drive (multi-spin, up and down, right and left) - Dropping:Fixed dropping - Out-ball frequency:0-5 level can be adjusted - Swing frequency:0-5 level swing speed adjust - Ball switch:Short ball/long ball switch -Load ball:More than 100pcs Package Includes: 1 x Table Tennis Robots