BL1 V4.2 Wireless Bluetooth Headset 700MAH Charging box Invisible In Ear Vehicle Sports Mini Headset

Product model: BL1 Headphone size: 20*14*12mm Charge box inch: 53mm*48mm*23mm Packing box size: 120mm*77*32 Product color: black, white, skin Earphone weight: single ear 4G 300mAh weight: 59G 700mah weight: 61G Bluetooth version: RDA 4.2 The length of the call: about 10 hours Battery capacity: 50mAh Charge box capacity: 300&700mAh Charge long: 1.5 hours Transmission distance: about 10 meters Bluetooth protocol: A2DP, HPF, HSP, AVRCP