Specifications:          General Specification             Brand       Likme             Model       LK-A7             Color       Black、 White             Cable Length       Wireless             Wearing Type       Car Headphone             Product Weight (kg)        0.07kg             Dimensions (cm\/ inch)        52*15*9mm           Technical Parameters             Connectivity       Bluetooth             Conectivity Interface       Micro USB             Time       3-5 Hours             Stanby time       160-200 h             Receive Sensitivity       110±3dB             Noise reduction       CVC6.0             Impedance       32Ω             Frequency Response       8-24000Hz             Bluetooth Version        Bluetooth 4.1             Bluetooth Protocol        A2DP、 AVRCP、 HEADSET、 HANDS-FREE            Transmission Range         1-10m    Package  Included:                 1*LK-A7 earphone           1*USB charging line           1* Turn hanging ear hang