1.Connect with bluetooth mobile phone,pause and replay the music. 2.Support the play of multi-media music. 3.Connect with exterior sounds source( the stereo sounds input in 3.5 mm jack ). 4.Adjust volume . 5.Have the functions of forward and backward in the play music. 6.Single-key operation,easy to finish the music playing control. 7.Double-color LED( Red and Blue) could show the using status.