Roku Ultra 4850R Streaming Player
- 4K output, 3840 x 2160 pixels
- Dolby Vision, HDR10/10+, AV1, VP9, H.265/HEVC
- Bluetooth, Ethernet, HDMI, USB, Wi-Fi connections
- Voice Remote Pro, rechargeable by USB-C
- Apple TV+, Disney+, Hulu, Netflix, Prime Video named
- HDMI cable and power adaptor in the box
- 2 year manufacturer warranty
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A flagship style box player with Wi-Fi 6, Ethernet, a rechargeable voice remote and broad video codec support. The listing says it is not smart home compatible.
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ASIN: B0DF44RTTPModel: 4850RCategory: Streaming Players
Overview
A rechargeable voice remote with USB-C charging works alongside a TV box that offers Ethernet, Wi-Fi and Bluetooth. Backlit controls and parental controls are listed, and the player connects to the TV by HDMI.
Wide codec support and both wired and wireless networking are the reasons to look at it. The limitation is smart home control, which the listing rules out, plus an odd weight entry.
Who it's for
A TV in a living room with an Ethernet jack nearby, and a set that handles Dolby Vision or HDR10 plus, gets the most from the listed formats. Households who want smart home integration should look at other players.
Pros and cons
- Dolby Vision and HDR10 plus listed
- AV1 and VP9 support
- Ethernet and Wi-Fi both
- Rechargeable voice remote
- Not smart home compatible
- Weight entry looks wrong
- Only five services named
Performance notes
Wide codec support means more streams play in their native format. A wired link avoids wireless interference, while the faster Wi-Fi standard helps where Ethernet is not available. The backlit feature listed is aimed at use in a dark room.
Specifications
| Brand | Roku |
|---|---|
| Model | 4850R |
| Dimensions & fit | |
| Weight | 18 grams |
| Dimensions | 5 x 4.9 x 1 inches |
| Item Dimensions L X W X H | 5"L x 4.9"W x 1"H |
| Capacity & performance | |
| Video Output Resolution | 3840 x 2160 Pixels |
| Construction & materials | |
| Color | Ultra (with Wi-Fi 6) |
| Compatibility & installation | |
| Connectivity Technology | Bluetooth, Ethernet, HDMI, USB, Wi-Fi |
| Smart Home Compatibility | Not Smart Home Compatible |
| Compatible Devices | Smartphone, Tablet, Television |
| Warranty & support | |
| Supported Internet Services | Apple TV+, Disney+, Hulu, Netflix, Prime Video |
| Warranty Description | 2 Year Manufacturer Warranty |
| Other details | |
| Resolution | 4k |
| Connector Type | HDMI |
| Video Codec | H.264/AVC, H.265/HEVC, AV1, VP9, HDR10/10+, Dolby Vision |
| Form Factor | TV Box |
| Other Special Features Of The Product | Backlit, Parental Controls |
| Builtin Media | HDMI cable, power adaptor, Roku Ultra streaming player, Roku Voice Remote Pro (2nd edition), USB-C charging for the remote |
| Controller | App Control, Button Control, Remote Control, Voice Control |
| Mfr Part Number | 4850R |
Closest rivals on specs
XIAOMI TV Stick 4K 2nd Gen with Google TV- Item Weight 0.04 vs 0.06 pounds (-33%)
Micca Speck 4K Streaming Player- Item Weight 0.04 vs 0.14 pounds (-71%)
Google G9N9N Streaming Player- Item Weight 0.04 vs 0.26 pounds (-85%)
Frequently asked questions
How big is the Roku 4850R?
The listing gives 5 x 4.9 x 1 inches. It also shows 18 grams, which looks too low for a box this size, so treat the weight as unconfirmed.
Does the Roku 4850R support Wi-Fi 6?
The listing describes the color as Ultra with Wi-Fi 6 and shows Wi-Fi under connectivity.
What is in the box with the Roku 4850R?
The listing names an HDMI cable, a power adaptor, the Roku Ultra player, the Roku Voice Remote Pro (2nd edition) and USB-C charging for the remote.
Does the Roku 4850R work with Alexa or Google?
No. The listing says it is not smart home compatible.