Casio Digital Keyboard CTK-3500

Number of Keys 61 Touch Response 2 sensitivity levels, off Maximum Polyphony 48 Number of Tones 400 Number of Rhythms/Patterns 100 Automatic Accompaniment Yes Built-in Songs 60 Songs Step Up Lesson, Scoring System, Voice Fingering Guide, Part Select (Right hand, Left hand, Both hands) Speaker 10cm x 2 Amplifiers 2W + 2W Power Supply 2-way [Batteries] AA-size alkaline batteries x 6 Approximatery 12 hours [AC Adaptor] AD-E95100L (DC 9.5V) Power Consumption 5.5W Dimensions 946 x 307 x 92 mm (w/o music stand) Weight 3.4 kg