Specifications 1.5 ounces 1.6x 3.5 x 0.27 inches In the Box Earbud headphones USB 2.0 cable Dock adapter QuickStart guide PC System Requirements A PC with USB 2.0 Windows 2000 Service Pack 4 or Windows XP Home or Professional Service Pack 2 or later memory support:512,1GB,2GB,4GB