JayBird Bluetooth Adapter for MP3 Players (Black) Enables use of Jaybird JB-200 Bluetooth Stereo Headset with any audio device with a 3.5-mm headphone jack For use with MP3 player, PC, Mac computer, and home theater system Requires Jaybird JB-CH-100 charger, which is included with Jaybird JB-200 Bluetooth Stereo Headset