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 638 hours of 1324 video parts with 320 GB size. Supplemented with 2160 pages and 103 MB size of e- study material. It covers Physics and Math of XI, XII standard CBSE and competitive exams like IITJEE Mains, IITJEE Advance. Validity: 2 years. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.