The Kodak Playsport is essentially a waterproof version of the company's Zi8 model. Regardless of its capability to survive a dunk down 10 feet underwater and keep shooting, the Playsport is a nicer design with rounded corners, a smaller body, and well-spaced buttons.
Just a picture of the port door closed. The big missing feature from this model is a built-in USB cable. It was cut from the design because Kodak would've needed to make the body bigger in order to cover it with a waterproof hatch.
One of the other major differences from the Zi8 is the inclusion of the LCD Glare Shield that gives you two filters (the black-and-white one is pictured here) to choose from that help you see your subject on the display screen in reflective outdoor situations. The filters are applied only to the screen--not to your final video.