The diskAshur PRO2 measures 124 x 84 x 20 mm and tips the scales at 225g when equipped with a 2TB hard drive. While this is a bit on the large side for a portable hard drive, its hardware encryption engine, physical protection mechanisms and keypad account for most of the extra bulk and weight.
The diskAshur PRO2 is also equipped with an integrated USB 3.1 cable that tucks into the side of the drive. The downside here is that it is pretty short. This probably won't be an issue if you're using the diskAshur PRO2 with your laptop or mobile device but you'll probably want to buy an extension cable if you're going to use it with a desktop computer.
With the diskAshur PRO2's components being completely covered by a layer of super tough epoxy resin, I wasn't able to crack it open. However, using CrystalDiskInfo, I was able to see what hard drive was in the enclosure. Looking at the screenshot below, you can see that iStorage has used Seagate's 2TB Mobile HDD (ST2000LM007). This drive features a SATA 6.0Gb/s interface, 128MB cache and a 5400 RPM rotation speed.