1、Full Size: Portable keyboard piano keys are adopted 1:1 scale piano keys design, with 88 half keys, and the volume of the keyboard changes with the amount of key force. 2、Enhanced Sound: Upgraded sound solutions and speakers ensure better sound quality. Piano folds 180°, saves a lot of space and is easy to carry, so you can take it anywhere. 3、Easy Connection: Portable piano keyboard uses Bluetooth to connect to apps, make piano learning more fun. MIDI and USB B interface supports the connection of smart devices to easily edit music. 4、Multiple Functions: Built in 128 timbours, 128 rhythms and 20 demo songs, portable piano with a front headphone port, 3 pedal port, teaching mode, recording, chord metronome, and sound change. Help you expand your musical possibilities. 5、Rechargeable Battery: Suitable for beginners, the foldable keyboard piano has a built in rechargeable 3.7V 1800mAh lithium battery. Each full charge provides 10 hours of playtime, ideal for travel, outdoor, school, performances, etc.