Headphone Specifications Driver 8mm Earring 8D Tactile Control Wireless transfer V 50 Work distance gt10 m Protocol A2DP AVRCP HFP SPP Support HFP 17 HSP 12 A2DP 1 AVRCP 16 SPP 12 and PBAP 10 Chips JL6963 BT8832A Full time Lithium battery 50 mAh 37