Shoving everything – a battery pack, a GPS receiver, IPX-7 waterproofability – into a single case to protect the otherwise svelte iPhone sounds like overkill, but if you’re going to put a case on it at all, you should do it right.
The iPod Nano’s camera isn’t the greatest, but now I see its virtue: With this waterproof case, it’s a perfect surfing companion. Why let someone else capture your painful aquatic bails when you can do it yourself?