PX870Keyboard88 keys, Tri-sensor Scaled Hammer Action Keyboard ?, Simulated ebony and ivory keys, 3 sensitivity levels,TonesSound Source : Multi-dimensional Morphing AiRPolyphony (maximum) : 25619 Instrument TonesSimulatorHammer Response - (4 levels), String Resonance - (4 levels), Damper Resonance - (4 levels), Lid Simulator - (4 levels), Key Action Noise - (ON / OFF), Damper Noise - (ON / OFF)Digital EffectsHall Simulator / Reverb - 4 (Hall Simulator), Chorus - 4, Brilliance - (-3 ~ 0 ~ 3), DSP - (Preset for some tones)SongsConcert Play - 10 songs, Controller - Start / Stop, Mode - Listen / Lesson / Play, Music Library - 60 Songs, Song Expansion (User Songs) - 10 songs (max.) Up to approximately 90 KB / songAdditional FeaturesSound Projection System, Headphone Mode, Volume Sync EQ, Connection to App, Lesson Function - Part ON / OFF, Lesson Part Select - Right hand, Left hand, MIDI Recorder - 2 tracks, 1 song, Approximate Data Capacity - Approximately 5,000 notes total, Audio Recorder / Playback - Max. 99 songs, approximately 25 min/song (44.1 kHz WAV format), Duet Mode, Octave Shift, Metronome - 0 to 9 beats; tempo range : 20 to 255, Pedals - 3 built-in pedals (damper, soft, sostenuto)Key Transpose2 octaves (-12 semitones ~ 0 ~ +12 semitones)Tuning ControlA4 = 415.5 Hz ~ 440.0 Hz ~ 465.9 HzNumber of Preset Temperaments17OthersGRAND PIANO button ELEC PIANO button Slide-type keyboard cover Auto Power Off: Off after approx. 4 idle hours (default setting)Connectivity and StoragePHONES/OUTPUT, Connector for 3-Pedal Unit, LINE OUT, USB TO HOST, USB TO DEVICESpeakers Size12cm x 2 + 4cm x 2Speakers System2-Way, 4-SpeakerAmplifiers20 W + 20 WDimensions1,393mm299mm801mmWeight34.6KgIncluded AccessoriesAC Adaptor, Music StandDetail Information