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TCL 43S423
Rs.22,865.24

TCL 43S5K
Rs.22,790.00
Model No 43S423 43S5K
TV Type Smart TV Smart TV
Screen Size 43 Inch (109.22 cm) 43 Inch (109.22 cm)
Resolution 4K 3840 x 2160 1920 x 1080
Aspect Ratio 16:9 16:9
Motion Rate 60 Hz 60 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 : MPEG, WMA, FLAC, MP3, AAC, WAV, OPUS
Supported Video Formats : AVI, MP4, MKV, TS, FLV, WMV, MOV, MPEG, WEBM, AVC, HEVC
Supported Picture Formats : JPEG, BMP, PNG, GIF
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 : 2K FHD QLED
HLG : Yes
HDR 10+ : Yes
Panel Type : VA
Contrast Ratio : 4000:1( Typical )
Audio
Audio Output ( RMS ) : 2 Channel X 8 W
Dolby Processing : Dolby Digital
Audio Passthrough : Dolby Digital Plus
Sound Output Power( RMS ) : 2 X 12 W
Dolby Audio : Yes
Sound Channel : 2.0 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 ( 2.0 ) : 2
USB ( 2.0 ) : 1
WiFi 4 : Yes
HDMI CEC : Yes
Bluetooth 5.0 : Yes
Ethernet / LAN : Yes
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 : Google TV
RAM : 1.5 GB
ROM : 16 GB
Netflix : Yes
YouTube : Yes
App Store : Yes
Prime Video : Yes
Google Cast : Yes
Voice Control : Yes
Disney+Hotstar : Yes
Multiple Viewing Mode : Yes
Google Assistant Built-In : Yes
Google Assistant : Voice Input Via Remote Control ( Optional )
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 : Metallic Bezel-Less Design
Color : Black
Subtitle : Yes
EPG : Yes ( DTV Programme Only )
Warranty Summary : 1 Years Comprehensive Warranty On Product
General Details
Power Supply (Voltage, Hz) : AC 100V-240V 50/60Hz
Annual Power Consumption : 83 kWh/Y
Power Consumption Standby : <0.5 W
Weight Without Stand : 7.39 Kg
Weight With Stand : 7.48 Kg
Packaging Weight : 10.47 Kg
VESA Walll Mount Pattern : 100 mm X 100 mm
Power Supply : AC 100V – 240V 50-60Hz
Power Consumption : 65 W
Power Consumption Standby : 0.5 W
Weight Without Stand : 5.02 Kg
Weight With Stand : 5.08 Kg
Weight With Packaging : 7.18 Kg
VESA Wall-Mounting : 100 mm X 100 mm
Supplied Accessories
Remote Control : Roku TV RC280
2 AAA Batteries : Yes
Screw Size : M6 X 12
Quick Start Guide : Yes English
Remote Control : Yes
Stand : Yes
Power Cable : Yes
User Manual : Yes
2N Batteries : Yes
Warranty Card : Yes

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Key Differences

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. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. TCL 43S423 and TCL 43S5K differ in resolution (UHD vs 1920 x 1080), which can affect overall clarity and sharpness of the display. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. If you're comparing TCL 43S423 and TCL 43S5K, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience.

Verdict: Both models offer good value, and the better option depends on your specific requirements and viewing preferences.