More Details: Specifications:          General Specification             Brand Name        REMAX             Model Number        RB-195HB             Color        White、 Black             Wearing Type        Head-mounted             Product Weight (kg)        0.22kg           Technical Parameters             Bluetooth Version        4.1             Transmission Distance        10m             Music\/Talk Time        About 14 hours             Standby Time        About 500 hours             Charging Time         3 hours             Battery Capacity        300mAh             Wire Line-in Port        3.5mm             Speaker        2*diameter 40mm             Frequency Response        20Hz-20kHz            Impedance        32Ω±15%            Working Temperature        -10-60\u2103    Package  Included:                  1 X Remax RB-195HB Bluetooth Headphone            1 X 3.5mm Audio Cable            1 X Charging Cable            1 X Manual