We have iPong Table Tennis Training Buddy with Product Detail Easy to use and assemble Select Underspin, Topspin, or Heavy Topspin settings 110 ball capacity; adjustable frequency from 12 to 70-balls per minute Sharpen your skills without need for a training partner Measures 18.75 x 11 x 11 inches (H x W x D); 1-year manufacturer's warranty . The "iPong Table Tennis Training Buddy" is best product for you. We recommended iPong Table Tennis Training Buddy