The Electronics Armband Case (Large) from Aquapac is designed to fit your small electronics and protect them from water damage. The case works best for walkie-talkies, small radios, GPS units and larger phones. It will fit electronics with less than a 7.5 (19.1 cm) circumference and 6.8 (17.3 cm) height. The case has a depth rating of 16.4' (5.0 m). The tough thermoplastic polyurethane casing protects your gear from dust, dirt and that most evil of contaminants - sand. Even if you aren't swimming but drop the case in water, it will float; but don't worry--the seams are all welded for additional protection. The armband can be used while running, swimming or simply to allow you to be hands-free to pursue activities such as surfing, kite-surfing, fishing or anything that revolves around water. The Aquaclip, a patented, secure, rustproof, injection-molded plastic sealing mechanism, is easy to use and opens and closes the bag via dual twist levers.