Please note that this product already has an English electronic version of the manual, if you need an English manual, please ask the seller for the electronic manual. SPECIFICATION Model: foldable piano Keyboard: 88 keys Tones:128 Power supply :USB/build-in rechargeable battery Power: USB 5V Transpose:-6~+6 Demo songs:30 Rhythms:128 Function:transpose Beat preset: 6 Port: headphone port, usb port sustain panel port Additional Details ------------------------------ Package quantity: 1