TrendyDigital H2OProof(TM) Audio Waterproof Case for iPhone with Padding, Built in Headphone Adapter, Removable Strap, detachable Armband for iPhone 3, iPhone 4, iPhone 4S, iPod Touch, Nokia Lumia 900, Nokia Lumia 800, and other Android Smartphone / DROID, with Gym / Sport / Jogging Armband (White) Built in Headphone adapter, Padding for bump protection You can interact with the iphone 4 through the case Two layer secure seals to lock out water Adjustable strap and removable armband for multiple carrying options Protects against water, dust, dirt, sand and frost