Walmart has the Roku Ultra | Streaming Device 4K/HDR/Dolby Vision, Roku Voice Remote with Headphone Jack for only $59 Shipped! (Reg. $99) Roku Ultra is the ultimate streaming player. With a lightning-fast interface and channels like Sling, Hulu, Netflix, Disney+, and HBO Max that launch in a snap, it’s the fastest and most powerful Roku player ever. Stunningly sharp 4K picture brings out the rich detail in your entertainment with four times the resolution of HD.