Specifications: – Independent patented technology 88 key Grand-Response Hammer action & dynamic curve keyboard – Display: OLED screen – 5 piano standard touch curves, Default, Light, Standard, Hard, Touch on/of -Voice: 26 -Demo songs: 60 -Rhythm: 15 -Polyphony: 256 (stereo) -Tempo: 20-280 -3 octaves -Function: Bluetooth Audio, Record, Play, Metronome, USB MIDI, Sustain, Tremolo, Transpose, Accompaniment, Prelude/Ending, Synch, Chord, Insert, Double Voice, Double Keyboard, Keyboard Drum -Double Piano, Piano duet, string ensemble, wind orchestra -Effect function: 64 reverb, 64 chorus, 127 Tremolo effect -Speaker power: 25W*2 full range speaker -Imitated Traditional Grand Piano pedal function, soft, selected sustain, sustain -Power: DC12V 2000mA -Net weight: 41.5 KG -Dimension: 1372*420*833 mm (L*W*H)