With the CTK-4400AD, enjoy musical fun with a compact keyboard, making every performance a unique experience. At the touch of a button, concert hall reverb can be applied to the sound of the keyboard, adding authenticity when you play. 61 dynamic touch keys, 180 lively rhythms, 152 songs, and 32 registration memories. The ctk-4400ad has a virtual hall effect. Playing the keyboard simulates the acoustic effect of a concert hall, and produces reverberations that transmit a feeling of being there. Suitable for beginners. 61 full -size touch sensitive . 600 sounds, 180 rhythms, . 152 stored songs. 254 level tempo control. Built-in metronome. Volume control. Grand piano feature with 48 note polyphony. Chorus effect. Sound effects kit. Auto accompaniment. Record_playback feature. Teaching function. LCD display. USB connection. MIDI in_out connection. Speaker_headphone jack. Microphone jack . Accessories included . iPad connection. Online lessons. General information: Includes mains adaptor. Can be battery powered. AA (not included). Size H10.3, W94.8, D35cm. Weight 4.3kg. Manufacturer's 2 year guarantee.