From Japanese company Caze comes the new fashion-friendly Duetto Case-Back for iPhone 4 ($27). Duetto is composed of a bumper-style two-piece plastic rim with no button or port coverage, and two interchangeable backs -- we received the polka dot patterns, which come in pink and black versions with white dots, but animal prints are also available. Matching Home button stickers are included to extend the design a little to the front of the device. The…
