Unfortunatly I buy this tablate and it is waste of money. I use this from 18 days and I feel that this tablet create some problems related to performance. I can not do multi task in nvidia shield k1. And I also feel issue about its battery backup. Frist day I charge this tablet 100% and normally I do work in it for 2 hours and bettery drain very fast.tottaly waste of money.i have very bad experiance with it