I'm on to my second bluetooth phone earpiece. I like wearing them but problem - they keep falling out. I read some reviews about the Jabra sport but it seems to suffer the same problem. They are both Plantronics. The one I have now is the explorer 240. If I bend down to pick up something from the floor, it falls out. I beginning to think a simple phone bluetooth ear piece that doesn't fall out is too much to ask??
[Moderator edit (MF): Moved to correct forum (nothing to do with Windows Phone) and changed the subject to something more than a word...]
I had the same problem and changed to overhead, bulky but comfy (for office use, would look pretty silly outside). Currently using Logitech H800, which has a USB dongle and BlueTooth, with a switch to change between them, so with the same headset I can swap from phone to computer.