200 Rhythms & 200 Polyphony The 88 keys music keyboard piano with 200 polyphony, 200 rhythms, 80 demo songs and dual keyboard function, satisfying various styles of performance, nice for teaching and practice. MIDI Function This 88 keys electric piano Support Bluetooth MIDI. Bluetooth MIDI can connect to mobile phones/tablets via Bluetoothr, perfect for music arrangement. Digital Piano can be used as birthday gifts, Christmas gifts, Valentine's Day,children's holiday gifts, but also an ideal gift for beginners and all music lovers! Full-Sized & Semi-Weighted 88 key weighted keyboard,restore the touch of the grand piano keys, the sound changes with the sense of strength.Velocity sensitive keys rebound faster and reduce the sense of strength than full-weighted keys,suitable for beginners. Portable Electric Piano Built-in speakers, External double headphone jacks and Powered by battery,this digital electric piano can be played anywhere and anytime. Smart Teaching With Bluetooth function,beginners and kids can practice this digital piano easily by wirelessly connecting the compatible external equipment or software.