88 Key Thickened Version Learner Hand Roll Electronic Piano Features: 1.88 keys portable roll up piano, convenient storage and easy carrying. 2.Silicon keyboard with thickened design, more real and more comfortable feeling. 3.Features 14 demo songs, 128 kinds of rhythms, 128 kinds of tones. 4.Supports recording, programming, playback, tutorial, sustain and vibrato functions. 5.Piano drum kit functions, master volume and tempo control keys. 6.With LED display showing the relevant parameter information. 7.With built-in speaker and headphone jack for connecting earphone or external speaker. 8.With USB MIDI output and sustain pedal interfaces. 9.Dual power supply: built-in 1100mAh li-ion battery or USB 5V power adapter. Specifications: 1.Material: Silicon + Plastic 2.Keyboard: 88 keys 3.Tone: 128 4.Rhythm: 128 5.Demonstration songs: 14 6.Power Supply: Built-in 1100mAh Li-ion Battery or USB 5V Power Adapter. 7.Power Adapter: US Plug. 8.Main body size: 23 x 9.5 x 2.5cm 9.1 x 3.7 x 1 inch. 9.Keyboard size: 125 x 16 x 1cm 49.2 x 6.3 x 0.4 inch. 10.Product Weight: 1251g 2.8lb. Package List: Roll Up Piano x 1 Pedal x 1 USB Cable x 1 Power Adapter (US) x 1 User Manual(English) x 1