1.2" LCD FM Transmitter Docking Station w/ USB Power Port for iPhone 3GS/4/iPod - Black (DC 12~24V)

Pros: Nice design, it does fill the cup of the car. the four holders have a spring functioning that secured the dock in place. Works nicely as an FM transmitter, it is full range. Led shows the fm station and nothing more in blue color, which is not visible in daylight (but the station is) Charges my iPhone 4s(other phones have not been tested) It has a line in 3.5mm jack and a usb power port (not tested yet)

Cons: It does not allow for a phone call to be listened through the car speakers. If a phone call enters, music is turned down(however this is a function form the iPhone) and you would need to get the phone out of the dock or answer with speaker(the iPhone speakers). I have a bluetooth device, so no problem with that. The car stayed in the sun several hours and the cover got bent out of shape, due to the heat, so it is not very resistant.

Other: If you are looking for the same as me, go buy it.

Pros: Working good, several holders for different models iPhone/iPod and complete with cables. Pretty good audio quality (just a little bit of noise). It's very easy to install. It does fit nicely in my Renault Espace cup-holder. The frequency choice is very wide, so It's easy to find a free frequency to hate the divice operating nicely.

Cons: + and - buttons doe not work for up and down music search, but only frequency. Switching off does not stop the iPod to play.

Other: I would recommend it to buy, since the price/quality/function ratio is pretty good.