More Details: Features: Multi-point: Can connect to two devices. Display battery level on IOS smartphone(some android phone can support). Voice control call status: Just say "Yes" or "NO" to answer or reject call. Built-in voice prompt. Can prompt phone number when other call you. Specifications:          General Specification             Brand Name        KONCEN             Model Number        X16             Optional Color        Gold、 Red、 Wind Red、 Black&Blue、 Blue&Black             Wearing Type        In-ear             Product Weight (g)        7.96g             Package Dimensions         95*95*33mm           Technical Parameters             Bluetooth Version        4.1 + EDR             Bluetooth Transmission        10m             RF Transmit Power        90dB             Mic Sensitivity        -42dB             Transmission Speed Rate        24MBPS             Talk Time        5 hours             Music Time        4 hours             Charging Time        1.5 hours             Standby Time        180 hours            Battery Capacity        55mAh            Voice Language        English            Function        Answer call\/end call\/reject\/redial final number\/volume control\/muilti-point\/auto connection    Package  Included:                  1 X KONCON X16 Bluetooth Headphone            1 X Charging Cable            1 X Earbuds            1 X English Manual