Keyboard: 61 standard size keys Maximum Polyphony: 48 Tones: Built-in tones: 400 Digital Effects: Reverb: 1 to 10, off Metronome: Beats per measure: 0 to 16 Tempo range: 20 to 255 Song Bank: Built-in songs: 60 Part off function: left-hand, right-hand, both-hand Auto Accompaniment: Built-in rhythms: 77 Dance Music Mode: Built-in patterns: 50 Dance Music Voice: 12 Other Functions: Transpose: ±1 octaves (-12 to +12 semitones) Tuning: A4 = 415.5 to 465.9 Hz (Initial default: 440.0 Hz) One Touch Preset: 77 Sustain button LCD display (adjustable contrast) My Setup: 1 APP Function: Chordana Play MIDI: 16 multi-timbre received, GM Level 1 standard Input/Output Terminals: PHONES/OUTPUT jack: Stereo mini jack (3.5mm) AUDIO IN jack: Stereo mini jack (3.5mm) USB port: micro B PEDAL jack: Standard jack (6.3mm) (Pedal sustain, sostenuto, soft, start/stop) Power Jack: 9.5V DC Speakers: 13cm x 6cm (oval) x 2 (Output: 2.0W + 2.0W) Power Consumption: 5.5 W Dimensions (WxDxH) mm: 930 x 256 x 73 Weight: Approximately 3.3kg (Excluding batteries)