Just got this on 6/5/2011 - Great automotive Bluetooth FM transmitter for Music and Speaker Phone for my iPhone 3G. Charged it fully right out of the box and then started using it. My unit came with the car cigarette lighter charger and literature.  I used a standard mini-USB power charger that I had and that worked fine.  Car charger also works well. Sound quality is great for both phone calls and for music through the car stereo. Tonal quality is fine on the stock stereos in my cars. For a more critical listening test, I set the FM transmitter for my Home Theater Surround System and the music sounds great on that also (good imaging and tonal quality). The unit appears to be durably constructed and should last.