... : Length 54.5mm, Diameter 18mm* Color: normal black, normal white, nano4G silver, nano4G black, nano4G purple, nano4G blue, nano4G green, nano4G ... yellow, nano4G orange, nano4G red, nano4G pink, rubber black, pearl white, total 13 colors* N.W.: 6.5g* G ... software already on the device), and compatible with for iPod touch 2G, iPhone 3GS, iPhone 3G and iPhone (need downloaded software such ...