For comparison's sake, the same product sells for $159.99 at Amazon.com.
Nicely, this deal applies to a USB 3.0 device, rather than a 2.0 device. Many manufacturers continue to ship USB 2.0 devices, although we mostly -- nowadays -- see those among USB Flash drives.
The deal can be found here.
Among the specs:
4TB Storage Capacity
USB 3.0 Interface
Up to 5Gb/s Data Transfer Speed
Local and Cloud Backup
Preformatted for Windows 8, 7, Vista, XP (needs to be reformatted for Mac OS X Operating Systems)
Includes AC Power Adapter