Casio Model Name:CTK-860IN No. Of Keys:61 No Of Tones:600 Dimensions (LxBxH) in mm:948 x 350 x 103 Weight(In Kg):4.4 Internal Songs:152 Digital Effects:Virtual Hall, Reverb (10 types), Chorus (5 types) Controllers:A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz) Metroneme Beats:Beats: 0, 1 - 9 Tempo Range:NA Transpose:25 steps (-12 to +12 semitones) Tuning:A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz) USB Connectivity:Yes Amplifiers:2.5W + 2.5W Speakers:12cm x 2 Power Supply(In Volts):9.5 Portability:Yes Skill Level:Professionals Warranty(Months):36