This portable electronic keyboard is made of safe and durable materials and can serve you for a long time. The hand-rolled design is very convenient to put in a bag or carry it when going out in a suitcase. You can enjoy the joy of beautiful parks, lively parks or on trains. Features - Material: Silicone. - Size: About 135.00X23.00X5.00cm/ 53.05X9.04X1.97inch. - The 88-key electronic keyboard can meet your daily needs. - A variety of rhythms, timbre can be adjusted for use. - Built-in 15 demo songs for learning and enjoying classic songs. - A great your friend and family. - Turn on to enjoy the stereo sound, no need to connect another speaker. Specification Product power supply: 2000MA battery or DC 5V adapter Output power: 500 MW Product tone: 128 tones Rhythm changes: 128 rhythms Demonstration songs: 15 demo songs Package list: 1 x Hand Roll Piano 1 x Data Cable 1 x Power Supply