Sony is one of the leading electronic company.Sony has several products one of them is this master piece external hard drive.frens honestly I want to say that this is best hard drive I have ever seen.see here we can store our valuable data safely in this external hard drive without any tension.this is very good as well as it has high data transmission rate.today this is like my fren, I can any where since it is very portable. So frens this is best hard drive.