I buy this hard disk from the flipkart.com by paying 12999 on the date 15 August 2016.I get discount of rupees 130 on it.
The performance of the copying data from the hard disk to laptop is very less ( slow) this upto 20 Mbps in USB 2.0 and the 30 Mbps from the USB 3.0 and from the laptop to the hard disk is also less this upto 10 Mbps in USB 2.0 and 20 Mbps in USB 3.0.
The design is attractive and it is look wise also good but while transferring the data the hard disk get heated rapidly in 5 minutes it warm too much.
The price of the hard disk is also high because if I buy sony 4 TB hard disk it will come within 10000 only.
So, Rather than buying this hard disk you should prefer the Sony hard disk it has more efficent performance and the price is also affordable.