It comprises a hollow box with openings for permitting operate most of its functions while the device is inside, open by one of its sides for introducing the device, an oscillating piece for closing the case, a pair of belts, a quick coupling system to connect the case and its base by way of a circular coupling that is part of the base, which will be attached to the wrist of the user, having in between an anti-radiation protection. Furthermore is suitable for devices with or without cover, in this latter case the openings are designed to be watertight by assembling some elements on them.
