Tuning Control: A4 = approximatery 440 Hz ± 50 cents Brand : Casio 61 piano-style keys Leson Function: Part on/off (Leson part: right hand/left hand) Dimensions (W x D x H): 949 x 304 x 93mm | Excluding music stand, and other projections Maximum Polyphony: 12 Other Functions: Song bank controller Display Screen: LCD Tones: 100 built-in tones Amp Output: 2W+2W Product Type: Standard Keyboards Key Transpose: 12 steps (-6 to +5 semitones) Rhythms/Patterns: 100 built-in rhythms Power Requirements: Batteries: AA-size x 6/Optional AC adaptor: AD-E95100L Speakers: 10cm x 2 Type : Keyboard Workstations Built-in Songs100 (Song Bank) Auto Accompaniment - Modes: CASIO Chord, Fingered | Controllers: Start/Stop, Synchro/Fill-in Included Accesories: Song book, music stand Built-in Songsn100 (Song Bank) Warranty: 3Years warranty provided by Manufacturer Input/Output Terminals: Headphones/output (standard stereo jack) | External power (9.5V DC) EAN code: 4971850314400 Weight: 3.3kg (Excluding batteries)