It's available in three configurations : 16GB, 32GB and 64GB
(Note: The Price of the product may change)
Starting the review from Build Quality, it's disappointing. The device measures 1.5 inch long and 0.75 inch wide which is easy to carry around either in your pocket or a laptop bag. But considering the build quality you often feel you're going to break it, Yes! It's made out of cheap plastic with two plastic sliders covering the connection part.
Unfortunately the computer connection port as well as Micro USB connection port are USB 2.0, which means you won't be able to take advantage of High Speed USB 3.0 computer ports. It'd have been a lot faster and better if at least the computer connection port was USB 3.0. The devices can be operated from basically any file manager on Android like ES File Explorer. The File Transfer speed is like 10-18 MBPS which is not bad, but a USB 3.0 is much faster.
Overall It's a good product for the people looking for more compatibility between the multiple devices. This device is also a good choice for phones with a low storage like Moto G, Moto E which supports USB OTG Functionality. Yes the build quality is bad but how much can you expect from a product that costs 587 INR ($9.43) for it's entry level version.