Ambrane A3-7 Plus Duo Rs. 2799 Screen Size (in cm):17.78(7) Internet Connectivity: Wi-Fi + 3G Operating System: Android 4.2.x Jelly Bean Screen Size: 7″ Built-In Front Camera, Built-In Rear Camera, Built-In Keyboard, Expandable Memory Battery Capacity: 3000mAh Voice Calling: http://www.snapdeal.com/product/ambrane-a37-plus-duo-black/636821868801