JouerNow RUD003 7 Pads MIDI Electric Roll Up Drum Set/ Foldable Silicon Table Hand Roll Drum Music Instruments, Battery/ USB Powered, with Built-in Metronome Extraordinary Druming Fidelity: 9 Professional tritone standard drum pads with drum bit swap & pedal function, assure you a maximun verisimilar & dramatic drum-playing acoustic sensation. Tempo - adjusting & Style - Switching: with Built-in Metronome basic functions & different styles of Drums programmed in, you will be able to choose the style of drum you like. Multifunctional USB MIDI/Micro Jacks: can be simultaneously powered & connected with computer/ laptop/ tablet PC/ mobile phone to charge or play computer drum games. A fun must-have for Drum - Players: Battery - Powered & with external headphone output, you can immerse in your music world without disturbing others, Potable & Foldable, play anywhere anytime. Smart & User - Friendly Design: made of standard anti - bacterial silicone rubber, harmless to children; thickeded drum pad for more powerful & lively drum beats.