Feature: 1. Support Bluetooth connection, download the software for POPiano to connect to your mobile phone via Bluetooth to practice piano. 2. Support MP3 function, connect to MP3 or other external audio source, can produce two‑channel surround sound. 3. MIDI sequencer is compatible with a variety of system arranger software, which can better meet your needs. 4. Supports headsets and external speakers, also supports four‑wire headsets with microphones. It is recommended to use a 3.5V stereo headphone plug. 5. With a sustain pedal, you can extend the end time of the button sound, which can upgrade your experience. Specification: Condition: Brand NewItem Type: Electrical PianoMaterial: PVC + ABS ResinBattery: Large-Capacity Lithium Battery ( Built in )(Charging time is about 4h, please charge it for more than 5h for the first time.) Micro USB: Charging interface and MIDI connection function. Demonstration Songs: 20 Tones: 128 Tones Timbre: 128 TimbresBluetooth Version: 5.0Instruction: 1. Connect the computer with the MICRO USB data cable, and then open the corresponding software to use the MIDI function. 2. You can install software with MIDI transmission protocol (for example: Everyone Piano) to use with your computer. 3. Use the piano to control the external device to play the keyboard. The piano will send MIDI data to the external device through the USB interface, and then you will hear the sound from the BX2 and the external device. 4. Control the piano through an external device. Use a USB cable to connect the external device and select the piano as the MIDI output method of the external device. The piano can be used as an external sound source.. Package List: 1 x Electrical Piano1 x USB Cable1 x Piano Bag1 x Pedal Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.