A very good hard drive, USB 3.0 compatible, with transfer speeds of up to 80 mbps (if using a USB 3.0 compatible computer).
Recommend this product?
The size is extremely small, as the name suggests, the size of a 'passport'. Very portable, able to fit in a jeans pocket easily.
Haven't made use of the WD provided software, but it has excellent plug-and-play compatibility with Windows XP, Vista and 7.
For those of you wondering, the spin rate is 5400rpm.
The only downside, is that the micro USB 3.0 socket is a different shape than micro USB 2.0 so if you lose the original wire, it's going to be very difficult to replace.