Description:The music receiver can be used with almost any audio receiver with an audio input jack， including automobiles.To enjoy car music，call solutions，the use of smart phones to make calls and listen to music through the car stereo. Using only one button， you can easily switch between music and phone.Specifics:Bluetooth v4.1，Class 2:33’(10m)Bluetooth hands-freeA2DP 1.3 and AVRCP 1.5 profile enable， HFP profile version1.6 compliant， HSP profile version 1.2 compliant ，AVRCP profile version 1.5 compliantPair with 2 phone at the same time and standby together. Re-connected automatically while back to carOnce disconnected over 10 minutes will be auto power off.Work time up to 14 hoursSupport voice prompt when you use it.Size:5.4*2.3*1.2cmPackage included:1X Music receiver1X USB cable1X User Manual1X Audio adapter