Buy an excellent study material for class 12th students in Physics and Mathematics. Use this external hard drive to learn at your own place.This external hard drive contains:303 hours of 640 video parts with 153 GB size.Supplemented with 1004 pages and 48 MB size of e- study material. It covers Physics and Mathematics of XII standard CBSE and competitive exams like IITJEE Mains and Advance.Validity: 1 year. Compatible OS: Mac , License: Single Machine with Mac Operating System.