1. Built-in DSP professional digital audio processing chip, self-developed A Bel Canto algorithm, easy to solve the problem of high pitch not going up, low bass not going down. 2. Built-in 7.4V/3000mAh polymer lithium battery, supporting DC5V-2A TYPE-C new generation charging cable charging. 3. Supports 7dB loudness adjustment of reverb and treble/bass, 32-level microphone and instrument volume adjustment. 4. Bluetooth version: 5.0 5. Playing time: about 5 hours 6. Charging time: about 1.5 hours 7. Transmission distance: greater than or equal to 10 meters 8. Frequency range: 20Hz-20KHz 9. Power supply voltage: 5V 10. Output power: 10W 11. Extended memory: 32GB (not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin