Piano Keyboard 88key 900 Timbres 700 Rhythms 110 Demo Songs Portable Electric Keyboard Kit Gift US Plug Item Type: Piano Keyboard Material: ABS Battery: AA Battery x4 (Batteries not included) Tone: 900 kinds Rhythm: 700 kinds Demo Songs: 110 songs Teaching Modes: One Key One Note, Follow Play, Ensemble Chord Functions: Comprehensive Chord, Low Chord, Chord Close Size: Approx. 110x21x5.8cm / 43.3x8.27x2.28in Connectable to: Smartphone, Tablet, Speaker, Headphone, Power supply Other Functions: Singing, Accompaniment volume, Main volume adjustment, Speed adjustment, Transpose, Sustain, Vibrato, Synchronization, Insert, Settings, Dynamics, Piano sound, Intro, Ending, Recording, Programming, Playback, Metronome, Dual tone, Dual keyboard, Keyboard drum, Dual power mode.