Otter Products today began shipping the , its waterproof case designed to protect the Nano from the elements. The interactive design is waterproof up to three feet, fits iPod nano 2GB and 4GB models, and is offered with a lifetime unconditional guarantee. The Nano's clickwheel is protected by a thin membrane that remains fully functional through the case, and an included belt clip provides cable management for headphones. The external headphone jack is compatible with any standard mini stereo plug, and when combined with waterproof headphones the OtterBox for iPod nano allows the device to be worn while swimming. The OtterBox for iPod nano is available for $40, while an optional armband is priced at $15.