Well, first of all: It does what it is! It charges with the supplied cable the iPhone as expected. Twice my 3G S has indeed times that this is not a suitable accessory, a stripping and re-plugging the cable into the iPhone but brought an immediate solution.
Delivered in a blister pack, which contains everything necessary for the operation. Processing seems to me very good overall, the status-light-emitting diode (which when the power is always lit) is not too bright and in my model (fortunately) green and not blue as I had initially expected from the product images.
Due to the relatively short length, it could possibly lead to contact problems in different car models, is in some places as reported here. Not I can confirm, however, the reported by another user noncompliance to a BMW E39, because it was fine with me both with the closing of the valve and the contact, which suggests possibly either a production-related changes or to a scatter in the production leaves.
It is very nice that protrudes through the low profile the charger is not so uncomfortable on the surface and therefore can still remain in the wall outlet. This looks harmonious and gives the 12-volt outlet at least for me finally a meaningful function.
Completely incomprehensible seem to me, however, the extremely annoying radio interference when using the charger that occur in my BMW E39 (Radio Professional RDS). Surprisingly, this phenomenon in a Chrysler PT Cruiser, which I had as a rental car during my US holiday was not, which is why it probably on the vehicle used (possibly on the fitted car radio) arrives here.
As I write this on competitive products (charger of my previous MDAs, charger my icebox, charger of my Navis, etc.) does not occur and other users of this unpleasant reception impairments, I find myself motivated to do so to give the product, only three out of five stars.
My conclusion after four weeks: The purchase was carried out first with mixed feelings because I was afraid of the short construction contact problems and possibly had to take the noise of the radio reception in purchasing. The contact problems have (at least for me) can not confirm the interference it very well, which is why I only use the charger when I really need it.
Basically, the charger is however recommended, if you can do without the radio reception either, or the vehicle radio is not affected by the disturbances. Who has an iPhone 3G S and a kombatibles car charger investigated can also access taking into account the points mentioned.