Casio CTK-240, Keyboard, 49 Standard keys, 12 Polyphonic voices, 100 Sounds, 100 Styles, 50 Internal songs, Learning system (Melody Cut), LC display, Speaker: 2x 1.6 W, Battery operation possible with 6x AA (not included), Dimensions: 914 x 237 x 75 mm, Weight: 2.8 kg, Suitable power supply unit: Art. #252463# (not included)