Do you use a Bluetooth mobile phone that supports the Headset or Hands-free profiles? If you do, then the Plantronics M3000 -- a Bluetooth headset that works wirelessly within 10m of your mobile -- could be for you. If you're considering such a move, the most important factors are: the design (is it comfortable to wear; does it look stupid?); the functionality (how easy is it to make, receive and manipulate calls?); and the performance (how good is the audio quality; how long does the battery last?). We find that the M3000 scores well in some, but not all, of these areas.