Roku Express 4K+ 3941R Streaming Device
- Resolution: 4K
- Video Output Resolution: 3840 x 2160 Pixels
- Supported Internet Services: Hulu, Netflix, Pandora, Prime Video, Vudu
- Connector Type: HDMI
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A solid 4K Roku streaming player with a strong rating history and steady recent sales, comparable to the 3810R in this same lineup.
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ASIN: B0916TKFF2Model: 3941RCategory: Streaming Players
Overview
Roku's 3941R streaming player outputs 4K UHD over Wi-Fi and weighs 1.6 pounds in a black finish.
Like the 3810R in this same batch, the 3941R targets 4K televisions rather than older 1080p sets, and recent purchase volume of about 4,000 a month matches that model closely. At 1.6 pounds it is somewhat heavier than the 1080p Roku player in this batch, though the difference is unlikely to matter for most setups.
- 4K UHD resolution
- Wi-Fi connectivity
- 1.6 lb, black
Who it's for
Suits 4K TV owners who want Roku's app catalog and are comparing between several similarly specced Roku players. Not a fit for anyone with a 1080p only television.
Pros and cons
- 4K UHD output
- Strong recent purchase volume
- Heavier than the 1080p model in this lineup
- No wired ethernet listed
Performance notes
Streaming runs over Wi-Fi with output up to 4K UHD, so a compatible television and a decent home network are needed to see the benefit of the higher resolution.
Specifications
| Brand | Roku |
|---|---|
| Model | 3941R |
| Dimensions & fit | |
| Item Weight | 0.1 pounds |
| Item Dimensions L X W X H | 3 × 1.6 × 0.8 inches |
| Capacity & performance | |
| Video Output Resolution | 3840 x 2160 Pixels |
| Memory Storage Capacity | 16 GB |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity Technology | Wi-Fi |
| Compatible Devices | IPhone, Andriod, Samsung, Smart Phone |
| Smart Home Compatibility | Smart Home Compatible |
| Ram Memory Installed | 1 GB |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Supported Internet Services | Hulu, Netflix, Pandora, Prime Video, Vudu |
| Warranty Description | 1 year |
| Other details | |
| Resolution | 4K |
| Connector Type | HDMI |
| Video Codec | H.264 |
| Control Type | App, Remote |
| Form Factor | TV Box |
| Other Special Features Of The Product | 4K Picture, HDR Color |
| Mfr Part Number | 829610004624 |
| Builtin Media | Power Adaptor, Removable Adhesive Strip, Roku Express 4K+ Streaming Player, Two AAA Batteries, Voice Remote |
| External Testing Certification | Não Aplicável |
| Item Type Name | Roku Express 4K+ |
| Controller Type | App Control, Remote Control |
Frequently asked questions
Does the 3941R support 4K?
Yes, its listed resolution is 4K UHD.
How much does it weigh?
1.6 pounds, per the listing.
How does it compare to the Roku 3810R?
Both output 4K UHD over Wi-Fi and carry similar ratings; the 3941R is listed at 1.6 pounds while the 3810R's weight figure is unclear.