The typically slender iPod Nano got a little troll-like with last years model (right). The fourth-generation Nano brings back the Nano's classic form but keeps the larger color screen of the third-generation model.
Measuring around 0.25 inches at its thickest point, the fourth generation of the iPod Nano is so thin that you barely see it in your pocket. The rounded glass screen offers better protection against scratching than its plastic-screen predecessor.
From the side, the fourth-generation iPod Nano looks like a section of a samurai blade: thin, metal, and aerodynamic. A single piece of aluminum warps seamlessly around the Nano, leaving its ports and switches on the top and bottom of the player.