Originally Posted by wizard
So I think of the radio & cell phones as pieces of safety equipment.
You're right they are, but they can also be a "pain in the chest" as I found out 2x when I landed on them, so I haven't carried one at a ski area for ages. My pockets are basically empty these days.
..but on with your question. The Jabra BT500 is the thinnest behind the ear bluetooth headset I've found. Might fit under a helmet?? Clip-ons aren't going to work under a helmet and will probably get bounced off as well if you're not wearing a helmet. Not sure how you would work a BT headset anyway if you were wearing a helmet because you either have to push the button on the headset to start/receive a call, or pull the phone out of your pocket and do it there.
I've have had a number of bluetooth headsets - Jabra and Motorola - and the phone seems to be the biggest factor impacting reception. The cold usually has dramatic impact on battery life, so I would expect it to impact the headset significantly. Can't say for sure because I've never used one in extended cold.
A wired push-to-talk headset would be my preference. The on/off button and mic usually hang around neck/chest level so you could easily sqeeze the button with a gloved hand. Barring that, I think there are some elaborate Spyder and Burton systems with membrane buttons in the fabric that integrate with your electronic equipment in a special pocket. I like geek stuff, but that's just too much crapolla for me to worry about. As mentioned previously, I think some helmets now have integrated BT.