Type A Features: Portable Electronic Piano Keyboard: Portable piano keyboard has 128 tones, 128 rhythms, 14 demo songs, with chord, sustain(with sustain pedal), metronome, record, playback, tutorial, drum kit and piano games functions. MIDI & Computer Output: You can connect the keyboard to devices like computer for editing music and connect with the piano apps, convenient to practice and programming. Built-in Speaker & Audio Output: The digital keyboard is equipped with built-in stereo dual speakers to provide you with wonderful sound, and headphone monitoring and extra speaker are available too. Control Board with LED Display: The side control board is equipped with LED clear display screen and functional keys for easily control parameters and functions, providing real-time feedback. Battery or USB/AC Adapter Powering: The keyboard can be both powered by built-in 1100mAh li-ion battery, USB cable via power bank or computer, or powered by AC power adapter. Multi ways for more options. Material: Plastic Key: 61 keys(white and black) Tone: 128 Rhythm: 128 Demo Song: 14 Functions: MIDI output, record, playback, tutorial, piano games, metronome, drum kit, dynamic switch, reset, sustain, vibrato, chord, trans Power: Built-in 3.7V/1100mAh li-ion battery, DC 5V or AC adapter Item Size: 91.5 * 28.3 * 15cm / 35.83 * 11.14 * 5.91in Note: This electric piano keyboard does not support BT wireless connection function. Packing List: 1 * Electronic Keyboard 1 * USB Cable 1 * Power Adapter 1 * Pedal 1 * User Manual Type B Features: This stylish USB MIDI Roll-Up Piano uses modern science and technology and electrical industrial innovation design.1. Before using, please install the product software; 2. Shall be connected to a computer to work; 3. Shall produce sound through computer sound card. 61 Keys Professional MIDI Keyboard. Makes you feel absolutely the same as real piano. Playing, recording and editing your music become more easy. Limitless professional tone and effect resources. Use the USB port to connect the product with a computer, no additional power is needed. Compatible with Win XP/Vista/7 and Mac OSX, without drive, supporting hot plug. Compatible with Cakewalk, Sonar, Cubase, Nuendo, etc major sequencer software and VST/VSTi. Material: Silicone Input Voltage: USB 5V Mainbody Size: 18.6 * 5 * 2cm / 7.32 * 1.97 * 0.79in (L * W * D) Keyboard Size: 88 * 17.4 * 0.5cm / 34.65 * 6.85 * 0.20in (L * W * D) Item Weight: 766g / 27oz Package list: 1 * USB MIDI Roll-Up Piano 1 * USB Mini 5pin cable 1 * Instruction Manual(in English) Note: Don't use the piano in a wet, high temperature or dusty area. Keep the keyboard level when in use. Do not place the piano near areas with strong electric waves. Do not place the heavy objects on the product, to avoid impacting of the collision. Do not pull or twist the body or keyboard with 90°. It may damage the functions. Do not tamper with the wiring of this product with a cutter or other sharp tools, or it may damage the functions.