Can't fault the service, received two days after ordering, easy and quick to fit and cheap fix to getting on-bike sat nav. May also be considered as added protection for dedicated bike units, however this would throw up clashing mounting issues.
Was a bit wary of what "up to 4.3 inches" meant (no jokes please!) as my Garmin measures 4.75 x 3 inches and I had a concern that it wouldn't fit. To make it simple if you have a unit up to 5 " wide, 3.5" high and .75" deep, it will fit. Spacers are supplied and I have used the foam packaging to give my device extra cushioning.
Touch screen can be operated via the clear viewing panel, but don't be a Muppet and mess about with it whilst you are moving, for you own safety stop if you need to make adjustments. I have been a serious touring motorcyclist for many years, long enough to know that given prolonged adverse conditions very little motorcycling paraphernalia is 100% waterproof, so whilst it held up well to a brief shower, I would take every precaution necessary, including a separate cover (sandwich bag might do) if I felt I was going to hit really bad conditions.
Clip on clip off action is almost as easy as a dedicated unit, you have to open it and remove the power supply cable if you have installed one. On this latter point there is a power lead entry point so the ingenuity of how to wire one in is up to you. Personally I have placed a cigar lighter unit under the seat and plugged it into my Optimiser socket (readily available unit). I then use the standard car unit to power the device.
It you buy this item, and I recommend that you do, a lot now will now depend on your sat nav device specification. Dedicated bike units usually allow audio instructions via Bluetooth to a helmet speaker, and also have the ability to programme an itinerary i.e. programme the route that you wish to follow which is great for us bikers as we like to take scenic and quite frankly sometimes obscure routes rather than the "A" roads and motorways the device will usually choose. The capability of your device will now obviously determine the service level you have from basic view only, view and sound, or full view, sound and programming options, however even at its basic level having a sat nav capability available on your bike is a positive bonus, so what you waiting for? Order it now.