Look at this external hard disk for the combine study of mathematics and biology subject of 11th class. The e- study materials are prepared by experts in the particular field and can be used for detail study of medical and engineering entrance exam preparation . This external hard drive contains: 346 hours of 674 video parts with 167 GB size. Supplemented with 1095 pages and 50 MB size of e- study material. It covers Mathematics and Biology of XI standard CBSE and competitive exams like IITJEE Mains, IITJEE Advance, AIPMT and AIIMS. Validity: 1 year. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.