I purchased this product to mount my iPhone 4 on my road bike to follow routes using the gps mapping functions. The handle bar mount fractured on it's first use (yes it was clipped into the base properly), going over a bit of bumpy country lane not that bad). The mount fractured through the rotating base mechanism. To make matters worse the case burst open as it hit the road ejecting my iPhone down the road. Thankfully just cosmetic stratches on the back and corners. An oncoming car reacted quickly and went around it!!!! Well done driver... I would shop around and check feedbacks as this has happened with some other designs..