Specification:
Bluetooth specification:Bluetooth 5.1                                

Chipset: Jieli                                                     

Bluetooth profiles supported: HSP,HFP,A2DP and AVRCP                                                                              

Operating distance: 10meters                                                                

Working time: 20 hours                                                                                                          

Charging time: about 2-4 hours                                         

Standby time: 100 hours                                           

Battery: polymer lithium -ion battery 3.7 V, 400mA/h                                                

Charge input voltage: DC 5V                                              

Speaker:φ40mm                                                            

Sensitivity: 108dB  SP.L at 1K Hz                                       

Frequency range:20Hz - 20,000Hz                                           

Impedance: 32 ohms                                                     

Charging port: Type-C                                          

Accessories: Charging cable, audio cable, manual