Bluetoth 5.0,3D Surround, second to be wireless, High-quality Bluetooth adapter Chipset Update to 5.0:Support low power bluetooth 5.0, high speed transmission Compatible with version 4.0/4.2,Incoming call answering, music playback, pause, volume adjustment, free switching between upper and lower songs Gently plug in, so that the headset instantly has Bluetooth function, and the 10m range spreads without hindrance Output port:3.5mm BT protocol:AVRCP.A2DP.HFP. : more than 90dB MIC:sensitivity: +/- 42dB Frequency:20Hz-20kHz Output power:11mW RL equal 16Q Capacity:110mAh Charge time:2h Useing time:4-5h colour: black Material: plastic Package Contents: 1 x Receiver (with charging cable) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.