● Bluetooth Specification:5.0;

● Chipset:BK3266          

● Bluetooth Profile: Support A2DP1.2  AVRCP1.4   HFP1.6  HSP1.2                           

● Drive Dimension:Ф40mm;                  

● Impedance:32Ω;                           

● Sensitivity ：117±3dB                  

● Frequency Range：20～20KHz          

● Operation Distance: >10M;                        

● S/N: >-75dB;                             

● THD:<0.5% ;                        

● Playback Time :≥20H;             

● Charging Time:≤3H;              

● Built-in Lithium Battery :3.7V/500mA