There are so so many bluetooth headsets on the market nowadays that it is easy for these cheaper models to get lost, but I found it, under £20 and wanted to share my thoughts with you.
The H3 is quite small, about 5cm in length. I have not weighed it, but in comparison to others it is mid-weight. It does not go into your ear, rather it hooks around the ear and the speaker sits just in front of the opening to your ear. The hook is flexible and coated in soft rubber. In use the H3 is very comfortable. Having worn it for six hours straight, my ear did not ache at all.
Three buttons. A multi-function button on the outer flat side for taking/making calls. Then a button on either side for volume control. The smaller side buttons are a bit small, but functional.
Call quality is pretty good, very clear with no obvious sound drop outs. Setting up on both my Motorola V3 and iPhone was very easy, with no problems encountered. I also used this a couple of times with my PS3 and it works fine.
Styling choices are often very personal, but I really like the sleek look of the H3 and can highly recommend it.