I bought transcend external hard disk from online shoping around rs 4300 only.WD My Passport Ultra 1TB external hard disk very helpful to save my personal data.this hard disk very easy to use with plug and play feature.WD external storage device also use for watching movies in LED.about hard disk data transfer speed 3.0 is very good.i am using this hard disk since last 5 months an not have facing any problem.easy to carry in bag.who are searching for external storage can buy this external hard disk without any hesitation.