Specifications:   Color: Black Size: Approx. 17x25x44mm\/ 0.67x0.98x1.73!#!amp!*!quot; Bluetooth Version: V3.0 + EDR Transmission Range: Approx. 10m\/ 32.81ft Bluetooth Mode: Hands free\/ Headset\/ AV\/ AV RCP profile Transmission Power: Class2 Wireless Power: 2.4GHz Charging Time: 2 hours Standby Time: 110 hours Talk Time: 4 hours Capacity: 55mAh   Features:    Small shape、 convenient hanging、 single-sided earpiece、 convenient and safe for driving   Single-mic noise reduction and echo cancellation for clear and crisp conversation   High-performance loudspeaker、 noise reduction technology、 crystal clear sound quality            Package Included:   1 x Bluetooth Headset 1 x Ear Hook 1 x USB Charging Cable 1 x Chinese Instructions     Notes:       Compatible with any Bluetooth enabled mobile phones     When in pairing、 make sure that the headset and bluetooth devices are within 1 meter. If there need to pairing password、 please input !#!amp!*!quot;0000!#!amp!*!quot;