10 Best 40 inch 4k tv (2025)

• With VIZIO Account, access VIZIO Home with apps built right in, manage your app subscriptions, watch free channels, and much more. A VIZIO Account is required for Smart TV functionality and product updates.
• Full HD delivers a step up in clarity from HD with richer contrast and true-to-life color achieved with Full Array LED Backlight and fine-tuned at a granular level with Active Pixel Tuning.
• See details your opponent won’t with HDR10 support on HDMI. Plus, when a console or PC is detected, FHD models automatically enable Auto Low Latency Mode.
• Built-in VIZIO Home lets you instantly access all your favorite apps and more. Enjoy hundreds of free channels and thousands of free On Demand titles with the built-in WatchFree+ app.
• The modern 3-sided VIZIO ThinFrame design fits beautifully in any room.

• Bring movies and shows to life with support for vivid 4K Ultra HD, HDR 10, HLG, and Dolby Digital Plus.
• 4K Ultra HD, HDR 10, and HLG deliver a clearer and more vibrant picture with brighter colors compared to 1080p Full HD.
• Press and ask Alexa to easily find, launch, and control your content, or check the weather, sports scores, and more.
• Stream over 1.5 million movies and TV episodes. Watch favorites with subscriptions to Netflix, Prime Video, Disney+, and more. Subscription fees may apply.
• Watch live and free TV, play video games, and stream music.

• The smart TV that makes sense: Roku Select Series TVs are built by Roku to bring viewers a brilliant streaming experience at an incredible value.
• Made by Roku: From the brand you trust to make streaming easier comes a thoughtfully designed 40-inch smart TV powered by the delightfully simple Roku experience.
• Bright picture: Enjoy your movies, shows, and games with sharp picture quality, exceptional clarity, and stunning brightness.
• Designed for seamless streaming: With features like fast Wi-Fi and apps that launch in a snap, Roku Select TVs get you to your entertainment quick and easy.
• Customizable home screen: Roku smart TVs put your favorite TV streaming apps, inputs, and free live TV front and center, so you can spend your time streaming—not scrolling.

• High definition TV - Bring movies and shows to life in HD 1080p resolution, with support for HDR 10, HLG, and Dolby Digital Audio.
• All your entertainment in one place - Fire TV gives you quick access to live TV, video games, and music, and lets you stream over 1 million movies and TV episodes with subscriptions to Netflix, Prime Video, Disney+, and more.
• Stream for free - Watch free movies and TV episodes with apps like YouTube, Tubi, Pluto TV, and more.
• Watch from room to room - All of your movies and shows from your Fire TV devices will stay in sync, for a seamless viewing experience from one room to the next.
• Smart and always getting smarter - Fire TV adds new Alexa skills, features, smart home capabilities, and voice functionality all the time.

• PURCOLOR: See a wide spectrum of colors than traditional RGB models with PurColor; From green turf to an amazing sunset, you’ll enjoy true-to-life picture quality with our innovative color technology
• 4K UPSCALING: Get a clearer picture for more of your shows and videos; 4K Upscaling transforms each pixel for improved content
• MOTION XCELERATOR: Watch your content smoothly while experiencing less lag and blur; It improves motion between frames so you have a seamless picture
• OBJECT TRACKING SOUND LITE: You’ll hear 3D surround sound that follows the movement on screen using our incredible virtual top channel audio— putting you right in the middle of the car chase, stampede or party scene
• MEGA CONTRAST: Automatically adjusts the brightness and contrast; It reduces the difference between light and dark areas so that objects on screen stand out more

• 4K Ultra HD (2160p resolution) - Enjoy breathtaking 4K movies and TV shows at 4 times the resolution of Full HD, and upscale your current content to Ultra HD-level picture quality.
• Alexa voice control - Speak commands into the voice remote with Alexa to control your Fire TV verbally—ask it to watch live TV, search for titles, play music, switch inputs, control smart home devices and more.
• Access thousands of shows with Fire TV - Watch over 1 million streaming movies and TV episodes with access to thousands of channels, apps and Alexa skills, including Apple TV+, Disney+, Hulu, Netflix, Prime Video, Sling TV, YouTube and other services right from this TV.
• DTS Studio Sound - This premium audio enhancement suite creates realistic and immersive audio with two-speaker playback that expands your sense of space and ambience.
• Hands-free control: Pair with your Amazon Echo and go hands-free, controlling volume, search, channels and more.

• 4K Ultra HD (2160p resolution) - Enjoy breathtaking HDR10 4K movies and TV shows at 4 times the resolution of Full HD, and upscale your current content to Ultra HD-level picture quality.
• High Dynamic Range - Provides a wide range of color details and sharper contrast, from the brightest whites to the deepest blacks.
• Alexa voice control - The Alexa Voice Remote lets you easily control your entertainment, search across apps, switch inputs, and more using just your voice. Press and hold the voice button and ask Alexa to easily find, launch, and control content, and even switch to cable.
• Access thousands of shows with Fire TV - Watch over 1 million streaming movies and TV episodes with access to thousands of channels, apps and Alexa skills, including Prime Video, Netflix, Hulu, HBO Max, YouTube, Apple TV+, Disney+, ESPN+, Sling TV, Paramount+, and other services right from this TV.*
• DTS Studio Sound - This premium audio enhancement suite creates realistic and immersive audio with two-speaker playback that expands your sense of space and ambience.

• WIDE COLOR GAMUT: Dive into a world of dazzling color. Special phosphor technology expands the range and depth of each hue that you’re able to perceive, bringing you truer and more intense shades than you’ve ever seen before. Absolutely brilliant.
• DOLBY VISION · ATMOS: Get transported through the screen. Dolby Vision captures even the most subtle emotions flickering across the actor’s face during a dark night scene. And the multidimensional sound of Dolby Atmos puts you smack-dab in the action, whether it’s in a jungle, city or rocket ship.
• FIRE TV: With Fire TV built in, you can enjoy a world of entertainment from apps like Prime Video, Netflix, Disney+, Hulu, and MAX. Plus, stream for free with Freevee, Pluto TV, Tubi, and more. And the included Voice Remote with Alexa lets you use your voice to easily change channels, launch apps, search for titles, play music, and even control smart home devices.
• 4K ULTRRA HIGH DEFINITION: More pixels on the screen produces a more clear and succinct picture making content look more realistic and true to life. Combined with Hisense's AI UHD Upscaler, non 4K content will get enhanced to near 4K quality.
• 4K AI UPSCALER: Bring what’s on screen into crystal-clear focus. Our 4k AI Upscaler transforms beloved classics, home movies, broadcast TV, and even streaming content into striking 4K quality. It’s amazing what can happen when every pixel works even harder.

• The smart TV that makes sense: Roku Select Series 4K TVs are built by Roku to bring viewers a brilliant streaming experience with superior picture quality at an incredible value.
• Made by Roku: From the brand you trust to make streaming easier comes a thoughtfully designed 43-inch smart TV powered by the delightfully simple Roku experience.
• Brilliant 4K picture: Stunningly sharp 4K resolution brings out the rich detail in your entertainment with four times the resolution of HD.
• Color that pops: Watch in incredible HDR10+ color, contrast, and brightness that brings your favorite entertainment to life.
• Automatic brightness: Avoid fiddling with settings with a screen that automatically adjusts based on your room’s lighting.

This VIZIO 40-inch D-Series Full HD 1080p Smart TV with AMD FreeSync, Apple AirPlay and Chromecast Built-in, Alexa Compatibility, D40f-J09, 2022 Model is a top choice in . Customers appreciate its quality, performance, and value.