I have the home audio and Car audio unit. They do work ok, but found that there is a distance issue. Normal blue tooth is good for like 10 meters away (3ft per meter). I find reception falls out at about 3 meters. GRANTED there are oher mobile devices but it has this same symptom even in the woods too. It has the quality if it is close. I found the batt in the transmiter holds a great charge, and put it away for like 6 months and when used again it still had LOTS of juice. I picked mine up at a clearance price at a local electronics retailer, but it was new in a sealed box. I can not give a higher rating because for the price i think you should be getting a better quality product. Motorola makes units too better quality for the same competetive price. If its to do with MP3 players, headphones, blue toothing, all this sort of jazz I am a consumer of these products and have many many. So this is a accurate review. Peace. "I am not saying it is a bad product, just that this should be offered for a cheaper price $140 in my opinion!!"