Features: 1.Dynamic Rhythm: Built in dual speakers, powerful bass effect, compatible with headphones or speakers to easily switch between a quiet learning environment and a lively party atmosphere. 2.Power Supply: It can realize charging and connection with the computer at the same time, using commonly used mobile phone and tablet adapters, you can power the electronic drum without buying an adapter. 3.Premium Material: The roll up drum practice pad is made of environmental protection non toxic and harmless silicone, waterproof, and recording, playback, and start or stop functions. 4.Rechargeable: Long lasting built in lithium battery, 2000mAh lithium polymer, rechargeable everywhere, it has volume, speed, sensitivity and reverberation adjustment function. 5.Easy to Carry: With a portable handle, it can be used for outdoor parties, camping, other places, enjoy the joy of music anytime, anywhere, foldable for easy storage. specification:Item Type: Electronic Drum Set Material: Silicone + Maple Power Supply: 5V 1A 2000mAh Lithium Battery (Built in Battery Shipped) PackageList: 1 x Electronic Drum 1 x Pedal 1 x Manual 2 x Drumsticks 1 x Charging Cable