* IIT JEE Mathematics Video Lectures by Mahe Alam Sir, BST Sir and Rahul Khandelwal Sir* Lecture Duration: More than 200 hours* Basic to Advanced level concepts are explained* It will work only on Android Devices(Mobile/Tablets) with valid IMEI Number* Videos will be in encrypted format. Internet connection is not required for activation.* Valid for 1 Year, For more validity visit our website www.thinkiit.in or Call us on 9880170515.* Video Resolution will be 640x360