Look at this video lecture hard disc for physics, biology and chemistry by M-Learning. These lectures are prepared by experienced and famous lecturers. This external hard drive contains: 996 hours of 1913 video parts with 490 GB size. Supplemented with 3731 pages and 177 MB size of e- study material. It covers Physics, Biology and Chemistry of XI, XII standard CBSE and competitive exams like AIPMT and AIIMS. Validity: 2 years. Compatible OS: Mac , License: Single Machine with Mac Operating System.