Features:Adopting environmental protection silicone, non-toxic and harmless, soft and waterproof; Flexible roll-up design and portable size, makes it easy to play the piano anytime and anywhere you want.This piano has 128 excellent tones and is equipped with 128 rhythms, 15 demos and 64 chords, can record and playbadk, features echo, trill and continuation chord, suit for learner and lover.Standard piano keyboard with 88 keys, also the black key is higher than the white key, make you feel like playing real piano.With dual mafnetic stereo speaker, can also be externally connected with audio system, earphone and home theatre; with LED digital display, can indicate the battery capacity, sound volume and function selection,easy to operate; built-in rechargeable lithium battery with 1200mAh capacity, can be used for a long time after being fully charged. Support connection to microphone by BT function; support MIDI function, can connect to computer to edit music and play piano games. (details refer to user manual)External KTV reverb microphone, enjoy the fun of playing piano while singing; pacakge comes with a sustain pedal, press the button to turn on the sustain function.Specifications:Model: IP88SMaterial: silicone, ABSKey Quantity: 88keysInterface Support: microphone jack/ 3.5mm audio input/ 3.5mm audio output/ sustain pedal port/ DC 5V charging portPower supply: 1200mAh lithium batteryBlack key size: 7.9 * 1.2cm / 3.11 * 0.47inWhite key size: 13 * 2cm / 5.12 * 0.79inKeyboard size: 125 * 15.8cm / 49.21 * 6.22inControl Box Size: 22.6 * 9.8 * 3cm / 8.9 * 3.86 * 1.18inItem weight: 1320g / 46.56ozPackage size: 27.5 * 23 * 10cm / 10.83 * 9.1 * 3.94inPackage weight: 1752g / 61.8ozPackage List:1 * roll up piano1 * USB cable1 * sustain pedal1 * user manual