I have purchased this from flipkart at a rupees of 4500.This is a very great and light weight portable hard disk.
I am using it from two years.
This has never given me trouble and stores a lot of data sa its maximum capacity is one TB terabytes.this has a USB 3.0.This is very fast.It copies and send data very rapidly at a average rate of 22 to 28 mbps.
This is a very good speed.it has a one year India warranty.so it gives you a very protective feeling against it damage or not working issues but belief me I never needs its servicing or its maintenance is very good and it has also not very heavy and compact.it can be easily put in jeans pocket or in laptop bags.