LG OLED B4 vs LG OLED EC9700

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OLED B4 compared with OLED EC9700

	LGOLED B4	LGOLED EC9700
Overview
Released
Released	March 2024	2014
Display
Panel
Panel	OLED	OLED
Panel detail
Panel detail	Self-lit 4K OLED with pixel dimming	Curved WRGB OLED with passive Cinema 3D
Resolution
Resolution	3840 × 2160 (4K)	3840 × 2160 (4K)
Refresh rate
Refresh rate	120 Hz	–
HDR formats
HDR formats	Dolby Vision, HDR10, HLG	None
Picture processing
Picture processing	AI Picture Pro, α8 AI Super Upscaling 4K, AI Brightness Control, Dynamic Tone Mapping Pro and Filmmaker Mode	Dual-core processor, per LG's exact EC970V German specification; Canadian EC9700 sheet names Triple XD Engine and Tru-4K Engine Pro
Picture modes
Picture modes	Personalised Picture Wizard, Vivid, Standard, APS, Cinema, Sports, Game, Filmmaker and ISF Expert bright/dark room modes	–
Motion handling
Motion handling	Native 120Hz panel; OLED Motion and HDMI 4K 120 fps input	Native panel refresh rate is unconfirmed; 4K input at 60 frames per second is not treated as native panel refresh.
Sizes
Sizes
Sizes	48, 55, 65, 77″	65″
Largest size
Largest size	77″ (better)	65″
Gaming
HDMI ports
HDMI ports	4 (all HDMI 2.1 at 4K 120 Hz+) (better)	4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	HDMI VRR, FreeSync Premium, G-Sync Compatible	None
Auto low latency mode
Auto low latency mode	Yes	–
HDMI detail
HDMI detail	Four inputs support 4K 120Hz, VRR, ALLM and QMS; eARC on HDMI 3	Four HDMI inputs, one side and three rear; HDMI 2.0 with 4K 60fps input and HDCP 2.2 support reported by AVForums
Input lag
Input lag	–	81 ms in Game mode (AVForums); relabelling the input as PC did not reduce it
Variable refresh range
Variable refresh range	LG specifies 40–120Hz	–
Game features
Game features	Game Optimiser and Dashboard, HGiG, AMD FreeSync Premium, NVIDIA G-SYNC Compatible and Dolby Vision gaming at 4K 120Hz	–
Smart TV and sound
Smart TV platform
Smart TV platform	webOS	webOS
Processor
Processor	α8 AI Processor 4K	–
Speakers
Speakers	20 W, 2.0 channels	–
Dolby Atmos
Dolby Atmos	Yes	–
eARC
eARC	Yes	–
Wi-Fi
Wi-Fi	Wi-Fi 5	Wi-Fi 4 (802.11a/b/g/n)
Bluetooth
Bluetooth	5.1	–
Speaker detail
Speaker detail	Down-firing 2.0-channel speakers	Harman Kardon audio system confirmed by the exact UK reviews. The Canadian 65EC9700 sheet specifies 40 W and 4.0 channels; no UK scalar audio figure is borrowed from that regional sheet.
Audio features
Audio features	α8 AI Sound Pro with virtual 9.1.2 up-mixing, acoustic tuning, Clear Voice Pro, Bluetooth Surround Ready and WiSA up to 2.1 channels	–
Voice assistants
Voice assistants	Built-in Amazon Alexa and LG intelligent voice recognition; supported languages vary by country	–
Casting
Casting	Apple AirPlay 2, ThinQ remote app and Multi View	Miracast and MHL 2.0; LG mobile remote app for iOS and Android; built-in 8 MP camera in the exact EC970V maker table
Software updates
Software updates	webOS 24; LG states four upgrades over five years with regional scheduling differences and security support through 31 December 2028. LG Australia's March 2024 launch notice confirms the range available now and lists 55/65-inch B4 March availability; release records that first confirmed series month, not a universal UK size-specific date.	Original webOS at launch; AVForums' May 2015 review describes a promised webOS 2.0 upgrade, and What Hi-Fi?'s November review describes version 2.0. UK retail was delayed into 2015 despite the 2014 generation. First-sale year 2014 is corroborated by Metro Weekly's December 2014 report of US retail availability; the exact first shipping month is unresolved after the bounded search.
TV tuners
TV tuners	–	European analogue and DVB-T/T2, DVB-C and DVB-S/S2 input combinations in the maker port table; UK Freeview HD reception confirmed by AVForums. SCART, composite and component inputs use adapters.
USB
USB	Two USB 2.0 ports	Three side USB inputs, one USB 3.0 and two USB 2.0
Ethernet
Ethernet	Ethernet LAN port	Ethernet LAN port
Optical audio out
Optical audio out	One optical digital audio output	Optical digital audio output and headphone output
Design and power
Size
Size	Without stand (W × H × D): 48″ 1070 × 620 × 45.9 mm; 55″ 1228 × 708 × 45.9 mm; 65″ 1449 × 832 × 45.9 mm; 77″ 1719 × 989 × 50.9 mm	–
Stand
Stand	With stand (W × H × D; weight): 48″ 1070 × 684 × 235 mm, 11.7 kg; 55″ 1228 × 772 × 235 mm, 14.5 kg; 65″ 1449 × 896 × 235 mm, 17.3 kg; 77″ 1719 × 1057 × 319 mm, 23.5 kg. Stand footprint: 48″ 933 × 235 mm; 55/65″ 1057 × 235 mm; 77″ 1403 × 319 mm.	24.6 kg with stand. AVForums describes a fixed arched metal stand with no swivel; panel-only weight is 23.2 kg in LG's exact EC970V table.
VESA pattern
VESA pattern	300 × 200 mm across these UK sizes	–
Power use
Power use	Under 0.5 W standby; 100–240 V AC, 50–60Hz supply	213 W on-mode, 0.3 W standby and 311 kWh annual energy use in the original maker EC970V table; 110–240 V, 50–60Hz supply
In the box
In the box	Magic Remote MR24, two AA batteries and attached power cable	Conventional remote, Magic Remote and batteries; LG's German table lists AG-F520 glasses package. Regional accessory quantities vary.