Butterfly SmartPong S100 Table Tennis Robot Electronic table-tennis robot for working on table tennis skills Able to produce topspin, underspin & sidespin balls. Can interchange between spin types during a progammed series Infrared remote control - no wres & no need for manual adjustments to the unit The unit can quicky be set up and removed from the table Includes 100 balls, user manual and instructional DVD; one-year warranty