transceiver = transmitter + receiverAll modern avalanche transceivers operate using the same radio frequency...so all can "hear" one another when a search is required.

Those two things you see sticking up in the picture are little metal clips. Typically you place them over the top of the tongue of the boot in front of the laces...then pull the powder skirt of your pants down over them. You can also purchase longer wires (extensions) that allow you to place them in pockets in your pants, on a belt, velcro'd to your leg...whatever you want. You can also use any of the Therm-ic brand battery packs instead of this Burton branded version of them. The top model from Therm-ic has a wireless remote control that you can wear around your neck with your ski pass, stick it in your pocket...wherever. You still mount the battery pack on the boot but you can control it from the remote without having to bend down to your boot, or raise up your pant, etc. It is a Lithium Ion based battery pack and is called the Liionpack. The remote is called the ThermiControl.

The Burton boots that are pre-wired (or pre-linered if you prefer) have a little connector that sticks up at the tougue that says "Therm-ic" on it. You plug this into the battery packs to heat them up. Not sure if this list is all inclusive but I'm pretty sure these are the boot models that have it: SLX, Sapphire, Q and Supreme. Most any boot can be made to have this feature through the purchase of Therm-ic's line of Thermicsole footbeds. Backcountry.com does not carry them...but you can find them at alpineaccessories.com

Found Japanese and/or Korean sites with it. Also found Burtons European site had it available in Large...but only ships to EU/EC countries. Tried a couple individual vendor sites. blue-tomato.com (Austria I believe) They have it in Medium. They will ship to USA via DHL. Polish site http://supersklep.pl had it in large. I couldn't read enough to know if they ship Intl. Good luck...hope you score.

Key for compatibility is your phone's implementation of Bluetooth. Specifically does the phone have Bluetooth A2DP (for wireless audio streaming) and Bluetooth AVRCP (for wireless control of music). Those are the two technologies needed for the O ROKR to work.