I am pleased with this item, its a very smart design and good idea. Of course for this price you can't expect it to be perfect. 1 major thing to note with this item is the length of the lead, it is approx 15cm long, from memory, which is awkward depending on the location of your cigarette lighter. I lenghtened mine and it is much better. A second, slight, problem, it sometimes gets interference from your handset, the traditional problem when a handset is near speakers etc.
Would have been five without these 2 problems