Item Type: Roll Up Piano Material: Natural Silicone, ABS Colour: Black Output Power: 500mW Applicable Voltage: 100-240V Power Supply: 1. Powered by Built in Lithium Battery 2. External USB Power Supply Battery Type: Built in 2200mAh Lithium Battery (Included) Package List 1 x Host 1 x Power Cord 1 x Adapter 1 x Sustain Pedal 1 x Manual It needs to be tiled when practicing the piano 1Included: Roll up portable piano contains 128 sounds, 128 rhythms, and 14 demo songs. It supports MIDI output and can be connected to a computer or tablet. 2Multifunctional: This soft keyboard piano provides easy recording, editing, playback, sustain, vibrato, teaching, chord functions. 3LED Display and Horn: Portable piano with LED digital tube display, built in horn for independent play, and external sustain pedal. 4Rechargeable: The hand roll piano is powered by a rechargeable lithium battery, which can be powered by an external DC5V power supply or a mobile charger. 5Scope of Application: The roll up piano has 88 keys (A1C9), with Bluetooth MIDI function, supports external speakers or headphones, and is suitable for all age groups.