Poor quality suction cup: This is not a premium as indicated in the title of the ad, but a mere "suction cup" (found for much cheaper), with plastic bottom line too fragile and too light. Not bad shake and background noise on videos had the wrong qualtée product that does not absorb shocks. After 40km / h and there's also the risk that the suction cup detaches. Indeed does not stick very well to the Body ... Brief prefer to add a little more and take the official product from Gorpo Get a great deal on amazon.