Comparison between Hisense 55EC591 vs Hisense 55K321

General Info
Model Number	Hisense 55EC591	Hisense 55K321

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Type	TV	TV
Year	2015	2015
Brand	Hisense	Hisense
Model Series	EC591	K321
Model Number	55EC591	55K321
Alias	UB55EC591UWTSEU	55K321ST2 LTDN55K321UWTSEU
Display
Screen Size Class	55" (inches)	55" (inches)
Diagonal Size	54.65 in 138.8 cm 1388 mm 4.55 ft	54.65 in 138.8 cm 1388 mm 4.55 ft
Screen Width	47.62 in 121 cm 1209.6 mm 3.97 ft	47.62 in 121 cm 1209.6 mm 3.97 ft
Screen Height	26.79 in 68 cm 680.4 mm 2.23 ft	26.79 in 68 cm 680.4 mm 2.23 ft
Display Manufacturer		Hisense
Display Type	VA	VA
Display Bit Depth	8 bits	10 bits (8 bits + FRC)
Frame Rate Control		Yes
Max Number of Colors	16777216	1073741824
Bits	24	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.315 mm	0.315 mm
Screen Pixel Density	80 ppi	80 ppi
Screen-to-Body Ratio	92.64 %	92.64 %
Backlight Source	Edge LED	Edge LED
DCI P3		83%
Screen Brightness	200 cd/m²	330 cd/m²
Static Screen Contrast	4000 : 1	3500 : 1
Screen Horizontal Viewing Angle	170 °	170 °
Screen Vertical Viewing Angle	160 °	150 °
Screen Input Lag		54 ms
Display Minimum Response Time	6.5 ms	6.5 ms
3D	No	No
Size, weight, color
Case Depth	3.27 in 8.3 cm 83 mm 0.27 ft	3.27 in 8.3 cm 83 mm 0.27 ft
Case Weight	16.5 kg 36 lbs
Case Width with Stand	48.78 in 123.9 cm 1239 mm 4.06 ft	48.78 in 123.9 cm 1239 mm 4.06 ft
Case Height with Stand	30.35 in 77.1 cm 771 mm 2.53 ft	33.78 in 85.8 cm 858 mm 2.81 ft
Case Depth with Stand	10.31 in 26.2 cm 262 mm 0.86 ft	6.97 in 17.7 cm 177 mm 0.58 ft
Case Weight with Stand	17.3 kg 38 lbs	17.3 kg 38 lbs
Case Color	Black	Silver
Hardware
System on Chip or SoC		MediaTek MT5657MCEJ
CPU Cores	4	4
TV Tuner	Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2	Analog (NTSC/PAL/SECAM) DVB-S2 DVB-T DVB-T2 DVB-S DVB-C
Built-in Camera	No	No
Network	LAN Wi-Fi 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz 802.11ac (IEEE 802.11ac) DLNA	LAN Wi-Fi 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz
Connectivity	1 x Ethernet RJ45 2 x HDMI 1.4 1 x 3.5 mm Audio Out 1 x Satellite In (Main; F-type female) 1 x AV Composite In (Video + L/R) 1 x Antenna (RF) (female) 1 x SCART 2 x HDMI 2.0 (ARC; CEC; MHL) 2 x USB 2.0 (max 0.5 A) 1 x CI+ 1.3 1 x AV Component In (YPbPr + L/R) 1 x USB 3.0 (max 1 A) 1 x S/PDIF	1 x Ethernet RJ45 1 x HDMI 1.4 1 x 3.5 mm Audio Out 1 x Satellite In (Main; F-type female) 1 x AV Composite In (Video + L/R) 1 x Antenna (RF) (female) 1 x SCART 3 x HDMI 2.0 (ARC; CEC; MHL) 2 x USB 2.0 (max 0.5 A) 1 x CI+ 1.3 1 x AV Component In (YPbPr + L/R) 1 x USB 3.0 (max 1 A) 1 x S/PDIF
Audio
Audio Speakers	2 x 10W	2 x 10W
Features
OS	Smart TV	VIDAA 1.0
Cool Features	HDCP (High-bandwidth Digital Content Protection) 2.2 PVR	Ultra HD Upscaling HDCP (High-bandwidth Digital Content Protection) 2.2 PVR
Ergonomics
Case Width	48.78 in 123.9 cm 1239 mm 4.06 ft	48.78 in 123.9 cm 1239 mm 4.06 ft
Case Height	28.23 in 71.7 cm 717 mm 2.35 ft	28.23 in 71.7 cm 717 mm 2.35 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	200 x 200	200 x 200
Removable VESA Stand	Yes	Yes
Height Adjustment	No	No
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	No	No
Forward and Backward Tilt Support	No	No
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	60 Hz
Screen Interpolation Technology	Smooth Motion Rate	Smart Motion Rate
Screen Interpolation Value	400	800
Screen Interpolation Measurement Unit	SMR	SMR
Accessories
Extras	Remote control - EN2D27	Remote control - EN2D27
Certificates and Standards
Usage and Storage Requirements
Safe Operating Temperature Level	5 °C - 35 °C 41 °F - 95 °F
Safe Operating Humidity Level	20 % - 80 %

Hisense 55EC591

Hisense 55K321