◆Bluetooth solutions：WT200    ◆Bluetooth version: 4.2+EDR
◆Supported Profile :HSP1.2、HFP1.6、A2DP1.3、AVRCP1.5
◆Battery: 50mAh*2 rechargeable  Lithium battery
◆Working range: 10-15M   ◆Optimum call distance: 6M
◆Talk Time :  3 hours(90% on volume) ◆Music time:  2.5 hours (80% on volume)
◆Earphone charging time : about 1.5 hours
◆Speaker size: 8mm  ◆Earphone size : 1.4*3cm
◆Earphone maximum power: 0.3W
Charging box  Specification :                                                                                                                          ◆Charging box battery: 380mAh   3.7V                                                                                                                                                                    ◆Weight：27g      ◆Charging box size: 4.5*4.5*3.3cm       ◆Charging base: about 1.5hours     ◆Color option: Black , White