Features:1. Standard parameters, compact roll up design. 61-key or 88-key digital piano; this piano has excellent tones and equipped with rhythms and demos. You never knows it"s a good start for you learning piano. 2. It is convenient to carry it with you, anytime, anywhere to play the piano-the piano can be rolled. 3. Built-in stereo speakers, travel, outdoor, at home, at school, you can play at any places you like. You can connect external headset while playing so as not to disturb others. 4. Unique design for children and beginners, portable piano, the piano uses the thinnest control panels, the thickened silicone keyboard, elegant body design, visual enjoyment and comfortable touching feelings. 5. Multifunction, support microphone, playback, recording, accompaniment, Bluetooth, demo, multiple tones, multiple rhythms, just enjoy your life, can also be connect with computer or mobile phones. Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement. Specification:Type: 61-key hand roll pianoMaterial: SiliconeKeyboard: 61 standard keys (including black keys)Rhythm: 128 rhythmsTone: 128 tonesKeyboard size: control box 9.6CMx22.8CMx33CM, keyboard: 88CM * 17.4CM * 0.5CM Demo songs: 40Recording function: 336 recorded characters, playbackOutput function: three digital outputsHardware: 64 chords, with 2 16-bit DAC outputs, built-in power amplifier circuit, adjustment function.Power supply: 4 AA batteries or direct chargingFunction: Emulate keyboard, record, play recording, 128 drum machine rhythm patterns, 40 rhythm practice demo, speaker port, earphone port, MIMD port, DC6V port.Type: 88-key hand roll pianoMaterial: Silicone Size: total length 131cm x keyboard length 125cm x 18.5cm x 16cmNumber of keys: 88 standard key positionsPower supply: battery, DC5V power supplySupport equipment: computer (desktop, laptop, tablet), mobile phone (need to support OTG function)Function: can connect with earphone or speaker for usingincludes:1 set x hand roll piano