It is a Jabra models 250 and 210 (one is the adapter fitting into the headphone slot on the phone - and the other is the earpiece.)
It does not pair with the car - but the adapter might pair with a car devise - would have to read the directions.
As I recall, the Sprint stores carry the bluetooth adapters for their phones - you can buy one - try to link with your car - and if not, return it. Anyone else try this? My car does not have bluetooth on its system.

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stevedrummer
"A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort."
- Herm Albright

I had tried using the Jabra adapter with my Camry's BT system when I had my i500, no dice. I don't know that that means that it cannot work with any car's system, but I definitely struck out with mine.

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It's a pond. My god. It's JUST a pond!!!
WHAT AM I DOING WITH MY LIFE??!??!!???
-Thoreau, in a sudden moment of realization

I tried the Jabra with my 2008 bmw. It did not work.