Specifications: Color: Black Green、 Black Red、 Black Blue、 White、 Black Note: Please kindly leave us a PAYPAL NOTE specifying your favorite Color、 otherwise we will send it in Random. Size: Approx. 22x30x37mm\/ 0.87x1.18x1.16!#!amp!*!quot; Total Length: Approx. 63cm\/ 24.80!#!amp!*!quot; Bluetooth Version: V4.1+EDR Sound Mode: Stereo Chip: CSR Charging Port: Micro USB Charging Time: 1.5 Hours Standby Time: 150 Hours Talk\/Playing Time: 4-6 hours Operation distance: 10 meters Connect 2 Phones: Yes Connect 2 devices at same time、 transfer calls between 2 mobile phones Power Source: Built in rechargeable battery Main Function: Volume up、 Volume down、 Playback\/Previous、 Low Battery Warning、 Answer\/ End\/ Reject Call、 Transfer call voice、 Replay the phone、 Mute、 Default setting、 Turn off voice notifications、 Turn on voice notification Short press of !#!amp!*!quot;+!#!amp!*!quot; to the previous song Long press of !#!amp!*!quot;+!#!amp!*!quot; to turn up the volume Short press of !#!amp!*!quot;-!#!amp!*!quot; to the next song Long press of !#!amp!*!quot;-!#!amp!*!quot; to turn down the volume    Package Included:    1 x Wireless Sport Bluetooth Headset   1 x USB Charging Cable   2 x Earbuds Sets (L\/ R)   1 x Headset Storage Box   1 x English User Manual