CTK-240 Digital Musical Piano Keyboard for Beginners 49 Keys 100 Tones 100 Rhythms, Without Power Adaptor (Sold Separately)

Basic Information: Number of keys 49 - Polyphony 12 - Number of tones 100 - Number of rhythms/patterns 100 - Auto-accompaniment - Built-in songs 50 - Lessons feature Melody On / Off, Part Select (Right hand) - Speaker 10cm x 2 - Amp output 1.6W + 1.6W - Power supply 2-way ;[Batteries] ;AA-size alkaline batteries x 6 ;Approximatery 6 hours - Power consumption 5.0W - Dimensions 914 x 237 x 75 mm (w/o music stand) - Weight 2.8 kg - Accessories: Music stand, Song Book - Key Features: Transpose - 6 semitones ~ 0 ~ +5 semitones - Tuning Control - A4 = approximately 440.0 Hz ±50 cents - Liquid crystal Display - Auto Power Off - Input/Output Terminals: PHONES/OUTPUT Stereo standard jack