Yamaha YDP-S51 WH Digital Piano -88-note graded hammer keyboard (GH), 10 sounds, 128-note polyphony, Pure CF Sound Engine, Intelligent Acoustic Control (IAC) and Acoustic Optimizer, Half-pedalling capability, integrated library with 50 Pianosongs, 4 reverb types, dual function, damper resonance, 2-track recorder (1 song), 3x pedals, 2x headphone jacks, USB to host, 2 x 20 W speaker system, Dimensions: 1353 x 783 x 309 mm. Weight: 36kg. Colour: white