* Powered by#1: DC 5V USB cable
* Powered by#2: 1200mah rechargeable li-battery
* connect with external speaker or headphone to make sounds
* Material: ABS and silicone
*Rolls up and folds easily, with a carrying bag for transportation
* Simulate standard digital drum, enjoy music fun anytime and anywhere.
* 8 demo songs, 5 tones, 3 metronome rhythm