Features New Design Wireless Line, no need jack connect to your cellphones, just use bluetooth to conncet. Providing lnline Microphone and Remote Controls, the remote control allows you to Volume Up/Down, Call On/Off, Song Next/Last Solid build quality, Superb sound quality & High cold tolerance. Features gold-plated connectors, tangle free design Compatible with Shure SE215 SE425 SE535 SE846 UE900 Earphone How to connect 1. Keep your device within 1meter when pairing, 2. Press and hold the middle key for about 10s until both the red and blue lights flash rapidly, 3. Use you device, search the right name, then connect. Package Include Headphone Cable * 1， Charging Cable*1