YINHE released an inexpensive but powerful robot, model SP-17. The robot can do all types of rotation: top, bottom, left and right side, as well as flat balls (no rotation). The force of rotation, as well as the speed of the ball, are regulated in steps. That is, you can customize very weak balls, as needed for a beginner player. And it is possible to do the strong spin and high speed required for advanced, already trained players. The frequency of throwing the balls is also adjustable - you can thus adjust the desired level of physical activity. The maximum frequency of throwing balls is able to give a good load even to a master of sports. The robot is capable of delivering balls not only to one point, but also scatter on the table. Moreover, the scatter mode is especially effective in that it delivers the balls not to predetermined points, like some other robots (which does not look like a real game situation), but to randomly selected points. This is a more difficult and more effective exercise, and it trains coordination much better than playing from well-defined points. Container for balls - 120 pieces (of course, you can use less). Balls that can be used: 40 or 40+. The delivery set includes a special ball meter to prevent balls of larger diameter from passing. Technical details: Gross weight: 4 kg Net Weight: 3.5 kg Packing dimensions: 403837 cm Rated voltage: 100-240V Rated power: 36W Spin: topspin, underspin, non-spin, left and right side spin Serving frequency: 40-70 per minute Serving Speed: 4-40 m/s Maximum balls: 120 balls Minimum balls: 10 balls Point of fall: Random Colors: Black