Although I am big time into gadgets (useful gadgets I might add) I have long be very resitant to the idea of a bluetooth headset. Having to charge yet another device. Having to look like a demented Spock with a plastic boom stuck in your ear. Early sound quality problems. It just wasn't for me. Until I had another look recently, that is. I stumbled across the SE HBH-GV435 and have been a happy camper ever since.It's an over the ear design which distributes the weight nicely and makes the largest part of the device almost invisible (especially if you have slightly longer hair). If I keep it on, most people don't even notice it. In addition, it is so comfortable that I sometimes forget to take it off for long periods of time. The actual earpiece just sits in your ear canal, so it doesn't hinder external sounds. You still hear the world in stereo, unlike those silly things that are jammed into your ear.Even though it is perfectly comfortable to wear over longer periods of time, it has another simple but brilliantly effective feature. A necklace. I just have it hanging around my neck from it and always have immediate access to it. What do you do with the other BT headsets that don't have this feature? It just becomes a hassle again. You'd feel compelled to leave it in your ear for longer than is comfotable and keep looking like the aforementioned demented Spock.Sound quality is very good at both ends and battery life was astonishing. It just lasted and lasted and lasted and wouldn't go off. The only criticism is maybe that the battery life indicator is not sooo acurate. But hey, that's the minutest of niggles. It pairs well and the call start/stop button is fine. The volume buttons are a bit fiddly while on the ear but I don't find I need to use them much. The on off button is hard to press while wearing it, but that might also be an advatage.Overall I love it and if lost would always buy another one. It enhances my Treo 680 to no end has become a trusted member of my gadget family. I could not recommend it more.