??Roll Up Piano Portable??The hand roll piano built-in stereo speakers, which can be rolled, and it is convenient to carry, go anywhere and start playing at any time. Support connected to speakers and external headphones, so don't worry to disturb others. ??Food Grade Silicone Material??The standard 88 keys roll up keyboard piano is made of high quality with environmental silicone keyboard, nontoxic, wear resistance, soft and durable, and has made the FCC product quality certification. ??MIDI Bluetooth Function??The foldable piano keyboard with MIDI function, which allows you to connect to various smart devices, such as computers and laptops, to create your own music. Easy connect to the garage band/POP piano music games etc., making piano learning more funny. ??Multiple Playability??88 keys roll piano keyboard with 128 tones and rhythms, 14 demos, rolling piano also include recording, editing, playback, sustain, vibrato, teaching, chord functions etc. satisfy beginners practice needs. ??Double Power Supply??The roll-up silicone electronic piano built in rechargeable Lithium battery, supporting USB charging, power bank charging, lithium battery-powered, 6-8h playtime per full charge. Don't worry to haven't enough power when practiced.