Roku Streaming Stick 4K 3820CA2
- 3840x2160 video output, Dolby Vision and H.265/HEVC
- Wi-Fi connection, dual WiFi support
- Stick form with an HDMI connector
- Voice remote controller type
- Netflix, Disney+, YouTube, Prime Video among the named services
- Not smart home compatible per the listing
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A stick player that adds streaming apps to a TV with an HDMI input, with a long list of named services and voice control. The listing shows Wi-Fi only and a resolution entry that conflicts with the stated output.
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ASIN: B09QMRNL86Model: 3820CA2Category: Streaming Players
Overview
A stick body carries the whole player and connects to the TV through its HDMI connector. It reaches the network over Wi-Fi with dual band support listed, and it is controlled by voice.
Many named services and Dolby Vision support are the reasons to look at it. The limit is wired networking, so a TV far from the router relies on signal strength alone.
Who it's for
A TV that has a free HDMI input and a router within wireless reach suits a stick player. Buyers who want Ethernet, or who plan to link the player to smart home gear, should know the listing says it is not smart home compatible.
Pros and cons
- Long list of named streaming services
- Dolby Vision listed
- Dual WiFi support
- Small stick form
- Wi-Fi only, no Ethernet listed
- Listed resolution conflicts with output figure
- Not smart home compatible
Performance notes
Picture and stability depend on the TV and on the wireless link, since a stick has no wired option. Dual band support lets it use whichever band has the cleaner signal. HEVC and Dolby Vision support decide which streams reach the TV in full quality.
Specifications
| Brand | Roku |
|---|---|
| Model | 3820CA2 |
| Dimensions & fit | |
| Weight | 0.6 pounds |
| Dimensions | 0.45 x 0.83 x 3.72 inches |
| Item Dimensions L X W X H | 0.45"L x 0.83"W x 3.72"H |
| Capacity & performance | |
| Video Output Resolution | 3840x2160 |
| Compatibility & installation | |
| Connectivity Technology | Wi-Fi |
| Smart Home Compatibility | Not Smart Home Compatible |
| Compatible Devices | Television |
| Included components | |
| Unit Count | 1.0 Count |
| Warranty & support | |
| Supported Internet Services | Apple TV+, CBC Gem, CTV, Crave, DAZN, Discovery+, Disney+, Global TV, Netflix, Paramount+, Pluto TV, Prime Video, Spotify, The Roku Channel, Tubi, YouTube |
| Other details | |
| Resolution | 8k |
| Connector Type | HDMI |
| Video Codec | H.265/HEVC, Dolby Vision |
| Form Factor | Stick |
| Controller | Voice Control |
| Mfr Part Number | 3820CA2 |
| Other Special Features Of The Product | Support Dual WiFi |
Closest rivals on specs
ONN 100026240 Android TV 4K UHD Streaming Device- Item Weight 0.6 vs 0.7 pounds (-14%)
onn. 4K Streaming Device with Google TV 8GB- Item Weight 0.6 vs 0.73 pounds (-18%)
Frequently asked questions
How big is the Roku 3820CA2 stick?
The listing gives 0.45 x 0.83 x 3.72 inches and a weight of 0.6 pounds, so it is a slim stick.
Does the Roku 3820CA2 have an Ethernet port?
The listing shows Wi-Fi connectivity and dual WiFi support. No Ethernet is listed.
Does the Roku 3820CA2 really output 8k?
The listing shows 8k under resolution but 3840x2160 as the video output. Plan around the output figure.
Will the Roku 3820CA2 work with smart home controls?
The listing says it is not smart home compatible.