Features: 128 tones, 128 rhythm, 30 Demo songs, it supports teaching function. With built-in speaker and headphone jack for connecting earphone or external speaker. Support MIDI output and can be connected with the computer or tablet. Portable and lightweight, easy to carry and store. Supports recording, programming, play, 2 step teaching, sync functions and more. Dual power supply: 4 x AA Batteries or DC USB 6V External Adapter Great musical educational gift for beginners or children to develop their interests and hobbies. Specification: Condition: 100% Brand New Main Material: Plastic Color: Black + White Type: 61 Keys Tone: 128 Rhythm: 128 Demo Songs: 30 Power Supply: 4 x AA Batteries or DC 6V External Adapter(Not included) Battery Runtime: About 15h(If used with 4 AA batteries) Whole Size(LxWxH): Approx. 101 x 23 x 3cm / 39.7 x 9.1 x 1.2in Weight: Approx. 1136g Packing List: 1 x Rolling Up Piano 1 x USB Cable 1 x Paper Box 1 x User Manual * Other terms not mentioned on our list are not included. 1、128 tones, 128 rhythm, 30 Demo songs, it supports teaching function. 2、With built-in speaker and headphone jack for connecting earphone or external speaker. 3、Support MIDI output and can be connected with the computer or tablet. 4、Portable and lightweight, easy to carry and store. 5、Supports recording, programming, play, 2 step teaching, sync functions and more.