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TCL 65S421-CA
Rs.74,045.46

TCL 65C6K
Rs.73,990.00
Model No 65S421-CA 65C6K
TV Type Smart TV Smart TV
Screen Size 65 Inch (164 cm) 65 Inch (164 cm)
Resolution 4K 3840 x 2160 4K 3840 x 2160
Aspect Ratio 16:9 16:9
Motion Rate 120 Hz 144 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 : 3.0, 2.0
Supported Audio Formats : MP3, MKV, WMA, AVI
Supported Video Formats : H.264, H.265, MPEG1/2/4, WMV, VC1, VP8, VP9, AV1
Supported Picture Formats : JPEG, PNG, BMP, 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 : 4K UHD Premium QD-MiniLED
HDR : Yes
HLG : Yes
MEMC : Yes
Ai HDR : Yes
HDR10+ : Yes
Ai Color : Yes
Ai Scene : Yes
Ai Clarity : Yes
Ai Motion : Yes
HVA Panel : Yes
Ai Contrast : Yes
Dolby Vision IQ : Yes
Enhanced Stability : Yes
Ultra-Long Lifespan : Yes
Ultra-High Contrast : Yes
Transient Response : Yes
HVA Panel Technology : Yes
Condensed Micro Lens : Yes
Colorful Quantum Crystal : Yes
5X Contrast Enhancement : Yes
Ultra-High Peak Brightness : Yes
Powerful Light-Emitting Chip : Yes
Super Energy Highlighter Base : Yes
Conventional Light-Emitting Chip : Yes
Dynamic Lighting Bionic Algorithm : Yes
ALD Corrosion-Resistant Technique : Yes
Bionic Color Optimization Technology : Yes
Panel Type : VA
Ultra-High Color Gamut : 93% DCI-P3
Contrast Ratio : 7000:1 ( Typ. )
Picture Engine : AiPQ Pro Engine
Brightness : High HDR Brightness
Dimming Zones : Precise Dimming Series Up To 512 Zones
Refresh Rate : MEMC 120HZ; VRR 48HZ~288Hz; DLG 240Hz
Audio
Audio Output ( RMS ) : 2 Channel X 8 W
Dolby Processing : Dolby Digital
Audio Passthrough : Dolby Digital Plus
Sound Output Power ( RMS ) : 2 X 10 W + 20 W
Dolby Atmos : Yes
IMAX Enhanced : Yes
ONKYO Subwoofer : Yes
DTS Premuim Sound : DTS Virtual X
Sound Channel : ONKYO 2.1 Hi-Fi Sound System
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 ( 2.1 ) : 4
USB ( 3.0 + 2.0 ) : 2 ( USB3.0 X 1, USB2.0 X 1 )
WiFi 5 : Yes
Miracast : Yes
HDMI CEC : Yes
Bluetooth 5.4 : Yes
Ethernet / LAN : Yes
Chromecast Built-In : Yes
HDMI2.1 ( eARC & ARC ) : Yes
Optical Digital Audio Out : Yes
HDMI Audio Return Channel : Yes
HDMI Version : HDMI1.4 & HDMI2.0 & HDMI2.1, HDCP1.4 & HDCP2.2
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 : 3 GB
ROM : 32 GB
AI Art : Yes
Netflix : Yes
YouTube : Yes
Video Chat : Yes
Art Gallary : Yes
Hey Google : Yes
Google Meet : Yes
Voice Control : Yes
Ambient Mode : Yes
Google Assistant Built-In : Yes
Hands-Free Voice Control : Yes
Supported Apps : Netflix, JioHotstar, Prime Video, YouTube, Zee5, Voot, JioCinema......
Other Apps Supported : YouTube, Hotstar, Netflix, ErosNow, ZEE5, Voot, Jio Cinema, Hungama Play, ALTBalaji, YuppTV, T-Channel............
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 : Ultra Slim Design
Color : BLack
Sleep Timer : Yes
Kid's Profile : Yes
Parental Lock : Yes
Quick Settings : Yes
PVR / Timeshift : Yes
Energy Saving Mode : Yes
Warranty Summary : 2 Year Warranty
EPG : Yes ( For DTV Programme Only )
General Details
Power Supply (Voltage, Hz) : AC 100V-240V 50/60Hz
Annual Power Consumption : 180 kWh/Y
Power Consumption Standby : <0.5 W
Weight Without Stand : 17.59 Kg
Weight With Stand : 18.00 Kg
Packaging Weight : 26.98 Kg
VESA Walll Mount Pattern : 400 mm X 200 mm
Power Supply : AC 100V – 240V 50-60Hz
Power Consumption : 250 W
Power Consumption Standby : 0.5 W
Weight Without Stand : 17 Kg
Weight With Stand : 17.2 Kg
Weight With Packaging : 24.2 Kg
VESA Wall-Mounting : 300 mm X 300 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
1N Stand : Yes
Power Cable : Yes
User Manual : Yes
2N Batteries : Yes
Warranty Card : Yes

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Key Differences

TCL 65S421-CA and TCL 65C6K differ in resolution (UHD vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. TCL 65S421-CA and TCL 65C6K are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. TCL 65S421-CA and TCL 65C6K offer different motion rates (120 Hz vs 144 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience.

Verdict: Choosing between TCL 65S421-CA and TCL 65C6K depends on your usage, whether you prioritize display quality, smoother motion, or smart features.