Roku Streaming Stick 4K+ (3821R)

The Roku Streaming Stick 4K+ (3821R) is a high-performance, portable streaming device designed for superior 4K Ultra HD entertainment in a discreet, plug-and-play form. Featuring a quad-core processor, HDR10+, Dolby Vision support, and a long-range Wi-Fi receiver, this model ensures smooth streaming even in larger rooms. Its standout feature is the upgraded Roku Voice Remote Pro, which includes rechargeable batteries, a lost remote finder, private listening via headphone jack, and programmable shortcut buttons, making it a premium choice for wall-mounted or hidden TV setups.

Product Features

Brilliant 4K UHD, HDR10+, and Dolby Vision

Stream content in stunning 4K Ultra HD resolution (3840 x 2160) at 60fps. Supports HDR10, HDR10+, Dolby Vision, and HLG for vibrant colors, enhanced contrast, and cinematic picture quality.

Quad-Core Performance

The device features a quad-core ARM Cortex A55 processor with 1 GB of RAM, ensuring fast app launches, smooth navigation, and reliable streaming performance.

Long-Range Wi-Fi Receiver

A redesigned Wi-Fi antenna embedded in the USB power cable provides up to twice the signal range of previous models, offering smoother streaming in rooms farther from your router.

Roku Voice Remote Pro

Includes a rechargeable voice remote with personal shortcut buttons, hands-free voice commands, a dedicated headphone jack for private listening, and a lost remote finder that chimes on demand.

Compact Plug-and-Play Design

The stick plugs directly into a TV HDMI port and can be discreetly hidden behind a wall-mounted or entertainment center TV while remaining fully functional.

Smart Home Integration

Compatible with Apple AirPlay, Apple HomeKit, Google Home, and Amazon Alexa for hands-free voice control and smart ecosystem connectivity.

Premium Audio Support

Supports digital stereo, DTS Digital Surround pass-through, and Dolby Atmos over HDMI for immersive, theater-quality sound.

TV Power and Volume Control

The remote can be programmed to control the power and volume of most major TV brands, reducing the need for multiple remotes in your setup.

Product Specifications

• Brand: Roku
• Model: 3821R
• Product Type: 4K+ Streaming Stick
• Processor: Quad-core ARM Cortex A55
• RAM: 1 GB
• Internal Storage: 4 GB
• Maximum Resolution: 4K UHD (3840 x 2160) at 60fps
• HDR Support: HDR10, HDR10+, Dolby Vision, HLG
• Wireless Connectivity: 802.11ac dual-band MIMO Wi-Fi (2.4 GHz / 5 GHz)
• Ports: HDMI 2.0b (output), Micro-USB (power & Wi-Fi receiver)
• Dimensions: 3.7 x 0.8 x 0.5 inches
• Weight: 0.9 oz (26 g)
• Remote Type: Roku Voice Remote Pro with rechargeable battery, headphone jack, voice search, lost remote finder, and programmable shortcut buttons
• Audio Support: Digital stereo, DTS Digital Surround pass-through, Dolby Atmos pass-through over HDMI
• Operating System: Roku OS
• Compatibility: Works with HD, 4K, and HDR TVs
• Condition: Brand New