Yamaha P-145 B, Stage piano, Graded Hammer Compact (GHK) keyboard with 88 weighted keys, Tone generator: Yamaha CFIIIS with damper resonance, 64-voice polyphony, 10 instrument presets, 50 internal song presets + 303 additional songs to learn via the Smart Pianist app, Dual / Duo modes, 4 reverb effects + sound boost (one type), Integrated speakers with 2 x 7 W output (12 x 8 cm oval design), Headphone output: 6.3 mm stereo jack, Sustain pedal input: 6.3 mm jack, Input for LP-5A pedal unit (not included), USB-to-host connection for MIDI and audio transfer to a computer, Dimensions (W x H x D): 1326 x 129 x 268 mm, Weight: 11.1 kg, Includes external 12 V / 1.5 A power supply (PA-150B), sheet music holder, and sustain pedal