Interface & PortsHeadphones (standard stereo jack), External power (9V DC).
Keyboard61 standard size keys
Other Features61 key, piano-style keyboard with light-up keys. Featuring 400 total onboard tones, 150 rhythms, 110 built-in songs, 10 reverb types and a sampling function. Packed with great features such as Casio’s famous light-up keys and Step Up Lesson System, 5 sound pads, USB port for MIDI and mic & headphone jacks. The LK-165 comes with an AC adapter, but you can also power it with batteries and take your music anywhere. All of these features make the LK-165 a portable and impressive musical instrument.
Polyphony48
Power6 AA-size zinc-carbon batteries or alkaline batteries/AC Adaptor: AD-E95100L