LG US660H9 Specifications
| 55US660H9 | 50US660H9 | 43US660H9 | |
| Diagonal Size | 55" | 50" | 43" |
| Resolution | 3,840 x 2,160 (UHD) | 3,840 x 2,160 (UHD) | 3,840 x 2,160 (UHD) |
| Backlight Unit Type | Direct | Direct | Direct |
| Brightness | 400 nits | 400 nits | 400 nits |
| Dynamic Contrast Ratio | 1,000,000:1 | 1,000,000:1 | 1,000,000:1 |
| Refresh Rate | 60 Hz | 60 Hz | 60 Hz |
| Response Time (G to G) | 8 ms | 8 ms | 8 ms |
| Life Span | 30,000 hours | 30,000 hours | 30,000 hours |
| HDR_HDR 10 Pro | Yes | Yes | Yes |
| HDR_HLG | Yes | Yes | Yes |
| UHD Contents Streaming Support | USB / IP / HDMI / RF | USB / IP / HDMI / RF | USB / IP / HDMI / RF |
| Tru 4K Upscaler | Yes | Yes | Yes |
| Digital (Terrestrial, Cable, Satellite) | ATSC, Clear QAM | ATSC, Clear QAM | ATSC, Clear QAM |
| Analog (NTSC / SECAM / PAL) | NTSC | NTSC | NTSC |
| MPEG-2 / MPEG-4 H.264 Decoding | Yes | Yes | Yes |
| Closed Caption | Yes | Yes | Yes |
| Speaker (Sound Output) | 10 W + 10 W | 10 W + 10 W | 10 W + 10 W |
| Speaker System | 2.0 ch | 2.0 ch | 2.0 ch |
| AI Sound | Yes | Yes | Yes |
| One Touch Sound Tuning | Yes | Yes | Yes |
| LG Sound Sync | Optical/Bluetooth Wireless | Optical/Bluetooth Wireless | Optical/Bluetooth Wireless |
| Pro:Centric Data Streaming (IP & RF) | Yes | Yes | Yes |
| HCAP (GEM / FLASH / HTML) | GEM / HTML5 | GEM / HTML5 | GEM / HTML5 |
| Pro:Centric IP Return Path | Yes | Yes | Yes |
| Multicast / Unicast Ready | Yes / Yes | Yes / Yes | Yes / Yes |
| Pro:Centric webRTC (Real Time Communication) |
Yes with Javascript | Yes with Javascript | Yes with Javascript |
| Pro:Centric Direct (HTML) | Yes | Yes | Yes |
| Pro:Centric Application (Java) | Yes | Yes | Yes |
| Quick Menu Version | 4 | 4 | 4 |
| Pro:Idiom DRM (S/W, Mobile, Lite) | Yes | Yes | Yes |
| Gallery Mode | Yes | Yes | Yes |
| Web Browser | Yes | Yes | Yes |
| CP App | Yes | Yes | Yes |
| Magic Motion Remote (MMR) Compatibility | Yes | Yes | Yes |
| SW Clock (World Clock / Alarm) | Yes | Yes | Yes |
| SoftAP | Yes | Yes | Yes |
| Wi-Fi | Yes | Yes | Yes |
| Screen Share (Miracast / WiDi) | Yes | Yes | Yes |
| Smart Share (DLNA) | Yes | Yes | Yes |
| LG Connect (LG TV Plus App) | Yes | Yes | Yes |
| Dial | Yes | Yes | Yes |
| Beacon | Yes | Yes | Yes |
| Bluetooth Sound Sync | Yes | Yes | Yes |
| Mobile Connection Overlay | Yes | Yes | Yes |
