Especially a tip: do not expect a risk of detachment and buy this VERY effective system.
By default the original bracket, push hard on the cup with your fingers and then press the sides to drive a maximum of air. Also I noticed that along the road, 5-10 minutes later, he had to enter the shaft of the fastening system and try to take off. If the rod slightly moved, the system was going to take off within minutes. A living hell, always worried that the foot comes off.
Here with this system "Go EasyPort" everything is easy and secure.
Unlike the majority, I do not first ask the cup then I stick the GPS, not me I take my 930T GPS, I set the "Go EasyPort" behind and then I plate the suction cup against the glass of my car and I turn the cup. This makes expel the air, that is anchored to the window and it does not come off anymore.
What I do not like is to put the suction cup on the glass and then put above the GPS, it is not clear, I have always struggled to install the GPS while in installing all before, it works just as well.
At the end, before going out of my car, I remove the GPS from its mounting. ATTENTION !!!! One tip I have never seen anywhere (or I frowned). You must click on the back of the GPS, there is a round thing that sinks alone, click on it with your fingers and then withdraws the support alone. In fact the media is snapped so if you force it out but it still does not fix the system.
If you click on the puck behind GPS, support "Go EasyPort" withdraws itself without any effort.
Especially given the very low price, as this system is robust, does not take off if it has been installed correctly, it is a mandatory purchase. And more, it takes much less space than the original media. I do not regret my purchase, however, I am delighted.
Oh and in addition last point that seems to me, the default system leaves suction cup marks, here the "Go EasyPort" it is less.