What you get: The wireless adapter, Charging cable, User guide and our 18 Month Guarantee supported by our friendly customer care team. Built-in mic and controls makes switching from phone calls to music a breeze (apple / android compatible). PLAY ON, the internal battery provides up to 8 hours of uninterrupted playback and talk time. Apple + Android Compatible: easily access the controls (volume, song skip etc.) and still enjoy the serenity of the headsets noise cancellation feature. UNWIRE AND UPGRADE your Bose QC 25 headphones to wireless functionality using this bluetooth adapter.