Joining True Wireless Stereo Headset

* You can customize the logo on the side of the headset. * Soft earmuffs protect the ear. * High definition sound quality, restore the music effect. Parameters: 1) Bluetooth specification: 5.0; 2) Bluetooth profile: Supprot A2DP1.2 AVRCP1.4 HFP1.6 HSP1.2 3) Drive Dimension: 40mm; 4) Impedance: 32Ω; 5) Sensitivity: 122±3dB 6) Frequency Range:20～20KHz 7) RF Range: 10M; 8) S/N: >75dB; 9) Distortion: <0.5% ; 10) playback time : ≥25H; 11) charging time: ≤3H; 12) Built-in lithium battery: 3.7V/500mA