I ordered this tab from flipkart order id - OD304264027894822000 . This tab loaded with windows 8.1 but microsoft give you chance to upgrade it to latest windows 10 for free.
So I upgraded it and now its much better. The user interface is much better now and it comes with office 360 with one year subscription worth rs 3500(approx). BUILD - slim, dual stereo speaker, light weight. DISPLAY - its good, ok for the price you paid. BATTERY - Windows 10 comes with battery saver mode so it helps to extended battery life, but battery is not replaceable. no sim support. The package comes with charger, screen guard, no head phone. OVERALL - if you need a low budget tab for your daily purpose use that comes with Windows, then go for it you don’t be disappointed.