The model has gone with the flow in terms of design and this has paid off in part with a pretty look, silver plastic casing, a reasonably small size and a smooth feel. It can be used with Macs and PCs and requires no external power. Available Capacities: 16MB,32MB,64MB, 128MB, 256MB,512MB, 1GB, 2GB Hi-Speed USB 2.0 Certified Compatible With USB 1.1 For Mac and PC, No Driver Req.* No External Power Required Functions as Hard Drive LED Indicates Power, Read/Write Automatic system detection as a removable disk. Shock Resistance: 1000G Min. Data Retention: 10 Years 3 Year Warranty Optional Accessories: USB cable CD driver Neck strap Manual