This is a wonderful item!
I've been looking for in-car iPhone holders for a while now, only to find they all have pretty much the same boring, fiddly, awkward, clumsy manner of fixing in place.
That is, until I happened across the Tetrax concept.
There is a choice of either fixing the base holder to the air vent or, using the sticky pad, to other positions on the dashboard or facia. Depending on the location of the car's air-vent/s, it may well end up positioned awkwardly. However, I decided to use the sticky pad to attach it to a smooth part of the sound system facia and it holds effectively and works an absolute treat!
The base device contains a strong magnet that serves to attract a similar magnet attached to the actual iPhone half-cover.
It is very strong when located onto the base part. Even on bumpy roads, it holds with no problem whatsoever. It is, however, important to mention that it's better (when removing the actual iPhone from the holder unit, to 'slide' it off rather than pull directly. It comes off easily and with no problem despite how strong it actually is when in position.
When on the base holder, the iPhone can also be rotated/swivelled to any position required, although you have to be sure when rotating it not to accidentally slide it off the holder.
The actual 'half-cover' for the iPhone proper is very very attractive (in black, thus enhancing the look of the iPhone), very tactile (almost a 'rubbery' feeling), fits very snugly and acts as a very effective protector should the iPhone fall in the street or wherever.
The package also comes with free additional magnets that I assume (since there is no mention in the instructions) is perhaps to use for other items(?).
This is the best in-car iPhone holderI have seen... no silly suction pads, cables etc.
All in all, this is an attractive, safe, protective, useful, unobtrusive, highly effective device.
I have absolutely no hesitation in highly recommending it... in fact, dump your old one and buy this! I can't imagine you regretting it!
Dani (Edinburgh)