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TCL

TCL 55S421 55 inch Class 4-Series 4K UHD HDR Roku Smart TV

  • Based on 136 reviews
Condition: New
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$344.95 Why this price?
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Availability: In Stock.
Fulfilled by Smart S.

Arrives Apr 19 – Apr 20
Order within 11 hours and 44 minutes
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Size: 55 Inch


Description

STUNNING PICTURE The 4-Series 4K TCL Roku TV delivers stunning picture performance while bringing all your favorite content through a simple, intuitive interface in a sleek modern design. 4K ULTRA HD RESOLUTION Stunning Ultra HD offers four times the resolution of Full HD for enhanced clarity and detail. HIGH DYNAMIC RANGE (HDR) TECHNOLOGY Delivers bright and accurate colors for a lifelike viewing experience. 4K CREATIVE PRO UPSCALING TCL’s proprietary 4K Creative Pro upscaling engine allows you to view your HD content in near 4K quality. ENDLESS ENTERTAINMENT Your favorite broadcast TV, streaming channels, gaming console, and other devices are front-and-center. No more flipping through inputs or wading through complicated menus. Like apps on a smartphone, all your favorites are at your fingertips from the instant you turn it on. Choose from thousands of streaming channels that feature over 500,000 movie and TV episodes plus live sports, news, music, kids and family, food, science and tech, fitness, foreign language, and so much more.

Screen Size: 55 Inches


Brand: TCL


Display Technology: LED


Resolution: 4K


Refresh Rate: 120 Hz


Special Feature: Flat


Included Components: Stand, TV


Connectivity Technology: Wi-Fi


Aspect Ratio: 169


Supported Internet Services: Roku TV, roku tv


Display Technology: LED


Resolution: 4K


Refresh Rate: 120 Hz


Aspect Ratio: 169


Contrast Ratio: High


Screen Finish: Flat


HDR Format Supported: HDR10


Motion Enhancement Technology: 120Hz CMI


Picture Quality Enhancement Technology: HDR10


Display Language Options: English, Spanish, French


Display Backlight Technology: LED


Display Refresh Rate in Hertz: 120


Viewing Angle: 178 Degrees


Screen Size: 55 Inches


Display Size Class: 55 Inches


Size: 55 Inch


Speaker Description: 2-channel audio system with 8 watts of power per channel


Number of Audio Channels: 5.1


Analog Audio Output Count: 1


Integrated Surround Sound Format: Dolby Digital


Wattage: 16 watts


Line Voltage: 110 VAC 60 Hz


Is Electric: Yes


Additional Features: Flat


Parental Control Technology: V-Chip


Operating System: Roku OS


Control Method: Voice


Remote Control Technology: WiFi Direct


Controller Type: Voice Control


Brand: TCL


Built-In Media: Stand, TV


Model Name: 4 Series


Antenna Location: Home Viewing


Model Year: 2018


Model Number: 55S421


Model Series: 55S421


Manufacturer: TCL


UPC: 846042010115


Connectivity Technology: Wi-Fi


Internet Applications: Roku TV, roku tv


Audio Input: USB


Signal Format: ATSC, NTSC, Clear QAM


Total Number of HDMI Ports: 3


Hardware Interface: HDMI, USB


Wireless Technology: Wi-Fi


Screen Mirroring Technology: Miracast


Total Audio Out Ports: 1


Number of Component Inputs: 1


Number of Composite-Video Inputs: 1


Total USB 2.0 Ports: 1


Total Usb Ports: 1


Content Sharing Direction: Mobile to TV


Number of Component Outputs: 1


Mounting Type: Table Mount


VESA Mount Standard: 200 x 200 mm


Color: Black


Warranty Type: Limited


Tuner Type: ATSC


Video Encoding: H.265/HEVC


Water Resistance Level: Not Water Resistant


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 19 – Apr 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Was nice
Had for a very short time don't try to hang it by yourself that drops on its corner it's a gunner
Reviewed in the United States on June 19, 2025 by Jim

  • I’ll take this TV over $2000 TV any day
Keeping this review short and simple the TV is amazing I’ve owned $2000 TVs and I will never go back to one. I now own three Roku TVs and my friend just bought one and she could not believe the picture. You have to experience this TV yourself to see if you like it or not in my opinion The television is worth the money and my experience with these televisions I have been nothing but successful. The remote is super easy to use the picture is brilliant with gaming mode, It is ultra fast and ultra responsive especially when working with arc or USB devices and the streaming is right where it needs to be. ... show more
Reviewed in the United States on July 12, 2019 by Usernameunknown

  • Most intuitive
Size: 55 Inch
Owned the android TV that upgraded to goodmgle TV, hated it The ROKU is superior and more intiitive
Reviewed in the United States on January 29, 2025 by Jimmy L Miller

  • Screen went black after one year
Size: 55 Inch
We bought this TV in October of 2023 and the screen suddenly has gone completely black a little over a year later.
Reviewed in the United States on November 11, 2024 by MCMPerry

  • Retailer
Had a terrible experience with this purchase. The retailer lost my my order during shipment, I guess. waited several more weeks to get my TV. Then when i got it to install it on the wall there was a large dent in the back where it looks like forklift damaged occurred. Luckly no issue's but, I will never order any electronics from Amazon ever again. ... show more
Reviewed in the United States on August 3, 2020 by james davis

  • Good
Size: 55 Inch
Works well, but did not come with adapter for hooking up surroundsound (audio optical cable) Had to purchase it separately
Reviewed in the United States on September 2, 2023 by CHUCK J MOLLIERE

  • Bad sound quality
Size: 55 Inch
Works great but the sound quality leaves much to be desired
Reviewed in the United States on September 1, 2023 by sherman

  • Great
Size: 55"
Great
Reviewed in the United States on November 26, 2024 by Amazon Customer

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