not state of the art bt headset but can confirm is in good working order, only slack part is that you have to stuff is in your ears rather than clinging to your ears. Thats why it has a matching neck strap, so you can hang it around the neck.
Planning to get myself an S15... Already viewed the car, it is an Spec-R model...
It comes with adjustable suspension (soft hard/ hi lo), project U front disc, Apexi muffler, HKS air filter, Oil Cooler...