Get CBSE class 11th and 12th coaching with this video lectures in external hard disk. These lectures are prepared by experienced and famous lecturers. This external hard drive contains: 596 hours of 1226 video parts with 290 GB size. Supplemented with 2264 pages and 95 MB size of e- study material. It covers Mathematics and Chemistry of XI, XII standard CBSE and competitive exams like IITJEE mains all IITJEE Advance Validity: 2 years. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.