One of the key aspects of success is being able to communicate effectively. Bluetooth has always looked like a great idea. Execution on the other hand has been a little iffy. A great headset should work with two phones and a computer with ease. It should be clear and you should be able to walk from your car to a store in a light breeze without blowing out your own eardrums.
In business and life, one of the most difficult things to do is to catch a fleeting thought. Just about every cellular phone today and most laptops have the ability to connect with Bluetooth, and ideally a quick button press and you should be recording or calling someone. Many cars nowadays have built-in Bluetooth speakerphones, which are a fantastic tool. You can think of something while you're driving, say "call office" and if nothing else leave yourself a voicemail message so you don't forget what you wanted to do.