Features:<br /><br />1. Bluetooth 4.1 version， it could build faster connection and transmit stable signal in high speed， proviede potent sound field.<br />2. Magnetic absorption earphone， the earphone could be absorbed together， not easy to fall down while hanging on the neck. <br />3. This earphone could be connected with two Bluetooth devices at the same time， it could compatible with most of Bluetooth devices.<br />4. Ergonomic design， soft earmuffs， comfrotable wearing， would not pain your ear in long time wearing.Specifications:General Specification  Model  BT-H06  Color  Black， Blue， Green  Wearing Type  In-earTechnical Parameters  Microphone  Yes  Wired Control  Support  Bluetooth Version  V4.1+EDR  Transmission Distance  10m  Receive Sensitivity  80dB  Frequency<br />  Response  20-20kHz  Battery Capacity  80mAh， 3.7V  Charging Time (h)  2h  Taking Time  Approx. 4h  Working Time (h)  Approx. 4h  Standby Time (h)  120hPackage  Included: 1* BT-H06 Magnetic Bluetooth Earphone 1* USB cable 1* Manual 1* pair of earhook 2* pair of earmuff<br /><br />