The Wahoo Fitness bracelet, a very good companion for any sport in which the iPhone with needs. It fits comfortably on the upper arm, can be adjusted very well and slips nor it pinches off. The iPhone 4 sits quite tight with shell, but it works. Headphones can be carried out through 2 openings, one has a Velcro, can be fixed with the excess cable.
A test in the pouring rain not gabs, but rain was not an issue.
The operation by the film is good, as long as it is fixed to the arm when it decreases, simply turn the pages backwards, then the film sits beautifully at attention.