| Model No |
55S421-CA |
QA55Q70BAUXZN |
| TV Type |
Smart TV |
Smart TV |
| Screen Size |
55 Inch (139 cm) |
55 Inch (139 cm) |
| Resolution |
4K 3840 x 2160 |
4K 3840 x 2160 |
| Aspect Ratio |
16:9 |
16:9 |
| Motion Rate |
120 Hz |
100 Hz |
| Viewing Angle |
178°/178° |
178°/178° |
| USB |
| USB Version |
: 2.0 |
| Supported Audio Formats |
: AAC, MP3, WMA, WAV ( PCM ), AIFF, FLAC, AC3 |
| Supported Video Formats |
: MKV (H.264), MP4, MOV ( H.264 ), TS ( H.264 ) |
| Supported Picture Formats |
: JPEG, PNG, GIF |
|
| USB Version |
: 2.0 |
| Supported Audio Formats |
: MP3, FLAC, OGG, WMA, WAV, MIDI, APE, AIFF, ALAC, M4A, MPA, AAC, SVAF, WEBM, RMVB |
| Supported Video Formats |
: AVI, MKV, MP4, ASF, MOV, 3GP, FLV, VRO, VOB, SVI |
| Supported Picture Formats |
: JPG, JPEG, PNG, BMP, MPO |
|
| Video |
| Backlight |
: 4K UHD HDR LED |
| HDR10 |
: Yes |
| Resolution |
: UHD |
| Clear Motion Index |
: 120Hz CMI |
| Display Colors |
: 1.07 Billion |
| Picture Engine |
: 4K Creative Pro Upscaling Engine |
|
| Backlight |
: 4K UHD QLED |
| HLG |
: Yes |
| Film Mode |
: Yes |
| AI Upscale |
: Yes |
| Noise Reduction |
: Yes |
| One Billion Color |
: Yes |
| Auto Motion Plus |
: Yes |
| Filmmaker Mode ( FMM ) |
: Yes |
| Smart Calibration |
: Basic |
| Picture Quality Index |
: 3400 PQI |
| Contrast |
: Dual LED |
| HDR |
: Quantum HDR |
| Clear Motion |
: LED Clear Motion |
| Viewing Angle |
: Wide Viewing Angle |
| Contrast Enhancer |
: Real Depth Enhancer |
| Picture Engine |
: Quantum Processor 4K |
| Micro Dimming |
: Supreme UHD Dimming |
| Motion Technology |
: Motion Xcelerator Turbo+ |
| Brightness / Color Detection |
: Brightness, Color Detection |
| Color |
: 100% Color Volume With Quantum Dot |
| HDR 10+ |
: Certified ( HDR10+ & HDR10+ GAMING ) |
|
| Audio |
| Audio Output ( RMS ) |
: 2 Channel X 8 W |
| Dolby Processing |
: Dolby Digital |
| Audio Passthrough |
: Dolby Digital Plus |
|
| Sound Output ( RMS ) |
: 20 W |
| Sound Wall |
: Yes |
| Q-Symphony |
: Yes |
| Multiroom Link |
: Yes |
| Adaptive Sound+ |
: Yes |
| Sound Mirroring |
: Yes |
| Bluetooth Audio |
: Yes |
| Active Voice Amplifier |
: Yes |
| Object Tracking Sound Lite |
: Yes |
| Dual Audio Support ( Bluetooth ) |
: Yes |
| Speaker Type |
: 2 Channel |
| Dolby Digital Plus |
: MS12 2 Channel |
|
| Connectivity Options |
| HDMI 2.0 |
: 3, w/HDCP 2.2 ( 1 ARC ) |
| USB 2.0 |
: 1 |
| Ethernet / LAN |
: 1 Yes |
| RF Input ( NTSC, ATSC ) |
: 1 Yes |
| Audio Output Headphone |
: 1 Yes |
| SPDIF Digital Audio Optical |
: 1 Yes |
| AV Input |
: Composite Video + L&R Audio In |
| Wireless Connection |
: 802.11ac 2X2 Dual Band ( support 2.4GHz & 5GHz ) |
|
| HDMI |
: 4 |
| USB 2.0 |
: 2 |
| WiFi5 |
: Yes |
| WiFi Direct |
: Yes |
| Bluetooth 5.2 |
: Yes |
| BT HID Built-In |
: Yes |
| Ethernet / LAN |
: Yes |
| USB HID Support |
: Yes |
| HDMI Quick Switch |
: Yes |
| Anynet+ ( HDMI-CEC ) |
: Yes |
| Bluetooth Low Energy |
: Yes |
| Digital Audio Out ( Optical ) |
: Yes |
| HDMI A / Return Ch. Support |
: Yes |
| eARC |
: Yes HDMI 3 |
| HDMI ( High Frame Rate ) |
: 4K 120Hz ( For HDMI 1 / 2 / 3 / 4 ) |
| RF In ( Terrestrial / Cable Input / Satellite Input ) |
: 1 / 1 ( Common Use For Terrestrial ) / 1 |
|
| Smart TV Features |
| Operating System |
: Roku TV |
| CPU |
: Dual-core |
| GPU |
: Dual-core |
| Powerful Mobile App |
: Yes |
| Advanced PQ Setting With Mobile App |
: Yes |
|
| Operating System |
: Tizen™ |
| Gallery |
: Yes |
| Tap View |
: Yes |
| Easy Setup |
: Yes |
| App Casting |
: Yes |
| Media Home |
: Yes |
| Wireless Dex |
: Yes |
| SmartThings |
: Yes |
| Web Browser |
: Yes |
| Ambient Mode+ |
: Yes |
| 360 Video Player |
: Yes |
| SmartThings Hub |
: Yes |
| TV Initiate Mirroring |
: Yes |
| TV Sound To Mobile |
: Yes |
| Samsung SMART TV |
: Yes |
| 360 Camera Support |
: Yes |
| Mobile Camera Support |
: Yes |
| SmartThings App Support |
: Yes |
| Far-Field Voice Interaction |
: Yes |
| Mobile To TV - Mirroring, DLNA |
: Yes |
| Video Communication |
: Google Meet |
| Multi-View |
: UpTo 2 Videos |
| Cloud Service |
: Microsoft 365 |
| Bixby |
: US English, UK English, India English, Korean, French, German, Italian, Spanish, BR Portuguese ( Features Vary By Language ) |
|
| Other Features |
| Closed Caption |
: Yes |
| 1 Year Limited Warranty |
: Yes |
| Parental Control ( V-Chip ) |
: Yes |
| Accessible Menu System ( CVAA ) |
: Yes |
| Control Buttons |
: Power/Power/Menu, <,> |
| Multilingual On-Screen-Display |
: English, Spanish, French |
| Signal Format Capability |
: ATSC / NTSC / Clear QAM |
|
| Design |
: AirSlim Design |
| Stand Type |
: New Simple Stand |
| Bezel Type |
: 3 Bezel-Less |
| Slim Type |
: Slim Look |
| Stand Color |
: Sand Black |
| Front Color |
: Titan Gray |
| EPG |
: Yes |
| HGiG |
: Yes |
| TV Key |
: Yes |
| Time Shift |
: Yes |
| Analog Tuner |
: Yes |
| MBR Support |
: Yes |
| Extended PVR |
: Yes |
| Teletext ( TTX ) |
: Yes |
| Mini Map Zoom |
: Yes |
| Triple Protection |
: Yes |
| Caption ( Subtitle ) |
: Yes |
| Analog Clean View |
: Yes |
| Surround Sound |
: Yes |
| Dynamic Black EQ |
: Yes |
| Game Motion Plus |
: Yes |
| Auto Channel Search |
: Yes |
| Connect Share™ ( HDD ) |
: Yes |
| ConnectShare™ ( USB 2.0 ) |
: Yes |
| Auto Game Mode ( ALLM ) |
: Yes |
| Super Ultra Wide Game View |
: Yes |
| Digital Broadcasting |
: DVB-T2S2 |
| OSD Language |
: Local Languages |
| Freesync |
: FreeSync Premium Pro |
| Accessibility - Learn TV Remote / Learn Menu Screen |
: UAE : UK English, French, AFR : UK English, French, Portuguese, Egypt, Libya : UK English, French, Spanish |
| Accessibillity - Voice Guide |
: UAE : UK English, French, AFR : UK English, French, Portuguese, Egypt, Libya : UK English, French, German, Spanish |
| Accessibility - Others |
: Enlarge, High Contrast, Multi-Output Audio, See Colors, Color Inversion, Grayscale, Sign Language Zoom, Slow Button Repeat, Graphic Zoom, Picture Off |
|
| General Details |
| Power Supply (Voltage, Hz) |
: AC 100V-240V 50/60Hz |
| Annual Power Consumption |
: 150 kWh/Y |
| Power Consumption Standby |
: <0.5 W |
| Weight Without Stand |
: 12.11 Kg |
| Weight With Stand |
: 12.29 Kg |
| Packaging Weight |
: 17.78 Kg |
| VESA Walll Mount Pattern |
: 200 mm X 200 mm |
|
| Power Supply |
: AC100-240V 50 / 60Hz |
| Power Consumption |
: 210 W |
| Eco Sensor |
: Yes |
| Auto Power Off |
: Yes |
| Auto Power Saving |
: Yes |
| Weight Without Stand |
: 16.1 Kg |
| Weight With Stand |
: 18.4 Kg |
| Weight Of Package Carton |
: 24.6 Kg |
| VESA Spec |
: 200 mm X 200 mm |
|
| Supplied Accessories |
| Remote Control |
: Roku TV RC280 |
| 2 AAA Batteries |
: Yes |
| Screw Size |
: M6 X 12 |
| Quick Start Guide |
: Yes English |
|
| Remote Control |
: TM2280E |
| E-Manual |
: Yes |
| Power Cable |
: Yes |
| User Manual |
: Yes |
| Webcam Support |
: Yes |
| Mini Wall Mount Support |
: Yes |
| Vesa Wall Mount Support |
: Yes |
| Samsung Smart Control ( Included ) |
: Yes |
| No Gap Wall-Mount ( Y21 VESA ) |
: Yes |
| Full Motion Slim Wall Mount ( Y22 ) |
: Yes |
| Optional Stand Support ( Y20 Studio ) |
: Yes |
|
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Compare TCL 55S421-CA with:
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Compare Samsung QA55Q70BAUXZN with:
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Key Differences
TCL 55S421-CA and Samsung QA55Q70BAUXZN differ in resolution (UHD vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. TCL 55S421-CA and Samsung QA55Q70BAUXZN are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. TCL 55S421-CA and Samsung QA55Q70BAUXZN offer different motion rates (120 Hz vs 100 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features.
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