TCL 55S421 4-Series 4K Roku TV 55-Inch
- 55-inch 4K UHD, HDR10
- Roku OS smart platform
- 120Hz CMI motion rating
- 3 HDMI, 1 USB, Ethernet, optical out
- 2 x 8W speakers, Dolby Digital
- VESA 200 x 200 mm
- ATSC tuner, Clear QAM
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A simple, easy-to-use ultra HD Roku TV for everyday streaming and broadcast viewing. HDR support is limited to the basic format, and the built-in speakers are modest.
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ASIN: B08XVQQPCZModel: S421Category: LED & LCD TVs
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Overview
Streaming from Roku channels, switching to a game console or tuning live broadcast TV all happen from one home screen on the TCL Roku TV. It shows ultra HD with HDR, and an upscaling engine brings HD content closer to ultra HD detail.
Roku's interface puts inputs and apps on one screen, which makes it easy for anyone in the house to use. It is an older model with a single HDR format, so newer formats are not part of the picture.
Who it's for
Households new to streaming and secondary rooms get an intuitive TV with a built-in broadcast tuner. Movie fans after advanced HDR formats should look at a newer, higher-end set.
Pros and cons
- Simple Roku home screen
- Built-in broadcast tuner
- Three HDMI inputs
- Optical audio out
- Basic built-in speakers
- Older model year
Performance notes
The Roku platform handles apps, inputs and the antenna tuner from one home screen, so switching sources is quick. Upscaling sharpens HD channels toward the panel's native resolution. The small built-in speakers suit dialogue more than big movie soundtracks.
Specifications
| Brand | TCL |
|---|---|
| Model | S421 |
| Dimensions & fit | |
| Screen size | 55 inches |
| Compatibility & installation | |
| VESA Mount Standard | 200 x 200 mm |
| Included components | |
| Included components | TV, stand |
| Warranty & support | |
| HDR Format Supported | HDR10 |
| Other details | |
| Resolution | 4K |
| Refresh Rate | 120Hz CMI |
| Display Technology | LED |
| Total Number of HDMI Ports | 3 |
| Connector Type | HDMI, USB 2.0, Ethernet, RF input, SPDIF optical, headphone |
| Tuner Type | ATSC, NTSC, Clear QAM |
| Screen Mirroring Technology | Miracast |
| Model Year | 2018 |
| Viewing Angle | 178 degrees |
| Total Usb Ports | 1 (USB 2.0) |
| Audio | 2 x 8 watts, Dolby Digital |
| Operating System | Roku OS |
Frequently asked questions
Does the TCL 55S421 work with a soundbar?
Yes, through the SPDIF optical digital audio output. A headphone jack is also listed.
Can I mirror my phone to the TCL 55S421?
Yes. Miracast screen mirroring from mobile to TV is supported.
Does the TCL 55S421 support Dolby Vision?
No. HDR10 is the only listed HDR format.