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Roku Express 4K HDR Streaming Media Player (3940CA)
Model #: 3940CA|Manufacturer#: 7092221|UPC #: 829610004655

Start streaming what you love in brilliant picture quality with a smooth wireless connection made for 4K.


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Roku Express 4K HDR Streaming Media Player Highlights:

  • The most affordable way to stream in 4K
  • Fast wireless performance for smooth streaming
  • Simple, customizable home screen with your channels front and center
  • Share videos, photos, and more from your Apple device using AirPlay
  • Stream free TV, live news, sports, movies, and more
  • Simple remote

Fast, 4K & HDR streaming made easy

Start streaming what you love in brilliant picture quality with a smooth wireless connection made for 4K. Your favorite channels and free, live TV are just a click away with the customizable home screen and simple remote.

Great for:

  • First-time streamers
  • Secondary TVs
  • Replacing cable

Brilliant picture quality

Experience your favorite shows with stunning detail and clarity. Whether you’re streaming in HD, 4K, or HDR, you’ll get picture quality that’s optimized for your TV with sharp resolution and vivid color.

Smooth wireless streaming

4K streaming requires a stronger internet connection than standard HD. That’s why Roku Express 4K features dual-band wireless for a fast connection and a smooth streaming experience, even with multiple devices on your network.

Tons of power. Tons of fun.

Upgrade to Roku streaming with a massive selection of free and live TV, a customizable home screen, and regular updates with new features. It has everything you need to replace cable and save money.

Setup is a cinch

It’s easy to get started with everything you need included in the box. Just plug it in to your TV and connect to the internet. With a quick guided setup, you’ll be streaming in minutes.

Simple remote

It’s got everything you need to control your player, including shortcut buttons to popular streaming channels.

Save money over cable

Switch to streaming and only pay for what you want, when you want, with no monthly equipment fees or contracts.

Automatic software updates

Get the most up-to-date software and new features without even thinking about it.

Private listening on mobile

Use the free Roku mobile app to pump up the volume on your TV without disturbing the house.

AirPlay lets you do it all

Effortlessly share videos, photos, music, and more from your Apple device to your TV using AirPlay. Plus mirror the screen from your iPhone, iPad, or Mac to the big screen.

To see a full list of compatible Roku devices, visit for more info.

Works with popular voice assistants

Enjoy easy voice control with Siri, Alexa, and Hey Google.

Apple, Apple HomeKit, and Siri are trademarks of Apple Inc., registered in the U.S. and other countries. Google is a trademark of Google LLC. Third party voice assistant features and services may be subject to change or removal without notice.

The Roku Channel

Your home for free TV

Enjoy an always-changing selection of free movies, shows, live news, kids’ TV, and more.

Stream what you love

Award-winning originals. Live news & sports. Classic favorites. Kids & family entertainment. It’s all right here.

• Roku Express 4K streaming player
• Simple remote with pre-set channel shortcuts
• Two AAA batteries
• USB power cable
• Power adaptor
• Premium High Speed HDMI® Cable
• Adhesive strip for mounting (optional)
  • Product Parts Warranty: 1 Year Limited
  • Product Labour Warranty: 1 Year Limited


Width:3.40 inches
Height:0.80 inches
Depth:1.50 inches
Weight:0.10 pounds