◆Bluetooth solutions：REALTEKL8763    ◆Bluetooth version: 5.0+EDR
◆Supported Profile :HSP1.2、HFP1.6、A2DP1.3、AVRCP1.5
◆Battery: 60mAh*2 rechargeable  Lithium battery
◆Working range: 10-15M  ◆Optimum call distance: 6M
◆Talk Time :   7hours(90% on volume)     ◆Music time:  6 hours (80% on volume)
◆Earphone charging time : about 1.1 hours
◆Speaker size: 13mm  ◆Earphone size : 1.8*2.5*2.7cm
◆Earphone maximum power: 0.3W
                                                                                                                                                           Charging box  Specification :                                                                                                                          ◆Charging box battery: 500Mah  3.7V                                                                                                                                                                ◆Weight：45g  ◆Charging box size: 7.3*6.3*3.6cm   ◆Charging base: about 1.5hours ◆Color option: Black , White