Headset Specifications: · Driver: 8mm. · Stereo sound 8D. · Tactile control. · Wireless transfer V 5.0. · Working distance: >10 m. · Protocol: A2DP, AVRCP, HFP, HSP, SPP / Support HFP 1.7, HSP 1.2, A2DP 1 AVRCP 1.6, SPP 1.2 and PBAP 1.0. · Chips: JL6963 / BT8832A. · Lithium battery: 50 mAh, 3.7 V. · Autonomia called: 4-5hs (full charge). · Musical Autonomia: 4-5hs (with full load). · Standby Autonomia: 1 month (with charger case). · Headset loading time: 1hr. · Frequency: 2402 MHz ~ 2480 MHz.