CNET have reviewed the "wearable" MobiBlu US2 (1GB, black) MP3 Player. 'The US2's Razr-like appearance comes in part from its size, measuring only 0.27 inches thick (the Nano is still thinner, though) and its hinged-look on top. Otherwise, it would be somewhat large for a 2GB flash player at 3.35x1.61 inches. At 1.05 ounces, however, it is one of the lightest players I've held in a while.
It's designed to be worn pendant-style, using the bundled necklace earphones that curiously clip onto both sides of the US2. We say "curiously" because each connector is actually a minijack port. Yes, there are two minijacks on the necklace earphones. Don't worry, they are not left and right channels--instead one of the headphone jacks is a dummy jack when used with the supplied 'phones. You can connect two sets of headphones if you wanted to, though. Wearing the US2 isn't too nerdy (the color screen and backlight look sweet at night), but if you want to control it, you must awkwardly turn the player around so it faces you. MobiBlu combats this problem with a pivot display option, whihc rotates the screen (and controls) 180 degrees so the UI isn't upside down. The US2 makes a great pocket companion, by the way. '
Read: MobiBlu US2 (1GB, black) - CNET