I can't find a picture of the remote with the button, but I found on IP & TV news dated 01/12/2015 an article titled ULTRAFLIX 4K STREAMING APP TO BE BUNDLED WITH HISENSE TV's by Thomas Campbell. I don't know how to attach it. Maybe someone can help. http://.iptv-news.com/2015/01/ultraflix-4k-streaming-app-to-be-bundled-with-hiesense It states "By clicking the Ultraflix application button, viewers will be able to stream more than 500 hours of 4k travel and nature documentaries..... Giving our customers access to 4k content is key, and Ultraflix provides an incredible library of 4k Ultra HD content, explains Erin Magee marketing director of Hisense