Guys it a very good external hard disk drive launched by wd and it is having a huge storage of 4 tb in which you can store all your personal data with safety and can store heavy games, all type of software, different movies, videos and music and your photos in it . The copying speed is 60mps and has a very good performance . it is compact and very much stylish and looks like a pocket dictionary and you can keep it in any small places like in your pant pocket also. You get 3 years limited warranty and get a full support by the company. so everyone should buy it specially for gamers and business man. best hard disk in the range of 12000-15000