Display: 27 in, VA, Direct LED, 3840 x 2160 pixels
Viewing angles (H/V): 178 ° / 178 °
Static contrast: 4500 : 1
Refresh rate: 50 Hz / 60 Hz
Frame interpolation: 120 MR (Motion Rate)
TV tuner: Analog (NTSC/PAL/SECAM), ATSC, Clear QAM
Dimensions: 1244 x 725 x 85 mm
Weight: 16.9 kg
Brand, series, model
Information about the brand, series, model and model aliases.
| Brand | KOORUI |
| Series | LBU591U |
| Model | S2721PM |
| Model year | 2017 |
Display
Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.
| Size class | 27 in (inches) |
| Diagonal | 1388 mm (millimeters) 138.8 cm (centimeters) 54.6457 in (inches) 4.5538 ft (feet) |
| Width | 1209.6 mm (millimeters) 120.96 cm (centimeters) 47.622 in (inches) 3.9685 ft (feet) |
| Height | 680.4 mm (millimeters) 68.04 cm (centimeters) 26.7874 in (inches) 2.2323 ft (feet) |
| Panel type | VA |
| Panel bit depth | 10 bits (8 bits + FRC) |
| FRC | Yes |
| Colors | 1073741824 colors 30 bits |
| Aspect ratio | 1.778:1 16:9 |
| Resolution | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p |
| Pixel pitch | 0.315 mm (millimeters) 0.0315 cm (centimeters) 0.0124 in (inches) 0.001 ft (feet) |
| Pixel density | 80 ppi (pixels per inch) 31 ppcm (pixels per centimeter) |
| Display area | 91.25 % (percent) |
| Backlight | Direct LED |
| Static contrast | 4500 : 1 |
| HDR | HDR10 |
| Horizontal viewing angle | 178 ° (degrees) |
| Vertical viewing angle | 178 ° (degrees) |
| Minimum response time | 6.5 ms (milliseconds) 0.0065 s (seconds) |
3D
3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.
| 3D | No |
Frequencies
Information about the horizontal and vertical refresh rates/frequencies.
| Vertical frequency (digital) | 50 Hz / 60 Hz (hertz) |
Frame interpolation
Many smart TV sets use a technology for interpolating (inserting) of intermediate frames between existing ones in order to achieve more fluent visualization, especially for dynamic scenes.
| Interpolation technology | Motion Rate |
| Interpolation value | 120 |
| Interpolation measurement unit | MR |
Power supply and consumption
Information about the power supply and consumption, energy efficiency class, etc.
| 110V | 100 V - 120 V (volts) |
| Alternating current frequency | 50 Hz - 60 Hz (hertz) |
| Power consumption (off) | 0.5 W (watts) |
| Power consumption (sleep) | 1 W (watts) |
| Power consumption (maximum) | 165 W (watts) |
Dimensions, weight and color
Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.
| Width | 1244 mm (millimeters) 124.4 cm (centimeters) 48.9764 in (inches) 4.0814 ft (feet) |
| Height | 725 mm (millimeters) 72.5 cm (centimeters) 28.5433 in (inches) 2.3786 ft (feet) |
| Depth | 85 mm (millimeters) 8.5 cm (centimeters) 3.3465 in (inches) 0.2789 ft (feet) |
| Weight | 16.9 kg (kilograms) 37.26 lbs (pounds) |
| Width with stand | 1244 mm (millimeters) 124.4 cm (centimeters) 48.9764 in (inches) 4.0814 ft (feet) |
| Height with stand | 776 mm (millimeters) 77.6 cm (centimeters) 30.5512 in (inches) 2.5459 ft (feet) |
| Depth with stand | 264 mm (millimeters) 26.4 cm (centimeters) 10.3937 in (inches) 0.8661 ft (feet) |
| Weight with stand | 17.3 kg (kilograms) 38.14 lbs (pounds) |
| Colors | Black |
Ergonomics
Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.
| VESA mount | Yes |
| VESA interface | 200 x 200 mm |
| Removable stand | Yes |
| Height adjustment | No |
| Landscape/portrait pivot | No |
| Left/right swivel | No |
| Forward/backward tilt | No |
TV tuner
The TV tuner is a device, which allows the receiving and visualization of a certain type of television signal. There are tuners for digital, analog, cable and satellite television.
| TV tuner | Analog (NTSC/PAL/SECAM) ATSC Clear QAM |
OS, apps and software features
Information about the operating system, applications, various software features if available.
| Operating system (OS) | Roku TV |
Audio
Information about the audio system - number and power of the built-in speakers, supported audio technologies.
| Speakers | 2 x 10 W (watts) |
| Down firing DTS Studio Sound |
Camera
Many contemporary desktop monitors and smart TV sets have built-in cameras.
| Camera | No |
Network
Supported network technologies and standards for exchanging data with other devices.
| Network | LAN Wi-Fi 802.11a (IEEE 802.11a-1999) 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) Wi-Fi Direct |
Connectivity
Available connectivity ports, slots and interfaces.
| Connectivity | 1 x USB 2.0 (max 0.5 A) 1 x Ethernet RJ45 3 x HDMI 2.0 (ARC; CEC) 1 x Cable/Antenna In (Main; F-type female) 1 x AV Composite In (Video + L/R) 1 x Optical Audio Out 1 x 3.5 mm Audio Out |
| High-bandwidth Digital Content Protection (HDCP) 2.2 |
Image file formats
Smart TV sets allow the display of different image file formats.
| Image file formats | JPEG GIF PNG |
Audio file formats
Smart TV sets allow playing different audio file formats.
| Audio file formats/codecs | AAC (Advanced Audio Coding) eAAC+ / aacPlus v2 / HE-AAC v2 FLAC (Free Lossless Audio Codec, .flac) MIDI MP3 (MPEG-2 Audio Layer II, .mp3) WMA (Windows Media Audio, .wma) WAV (Waveform Audio File Format, .wav, .wave) |
Video file formats
Smart TV sets allow playing various video file formats.
| Video file formats/codecs | 3GPP (3rd Generation Partnership Project, .3gp) AVI (Audio Video Interleaved, .avi) Flash Video (.flv, .f4v, .f4p, .f4a, .f4b) H.263 H.264 / MPEG-4 Part 10 / AVC video H.265 / MPEG-H Part 2 / HEVC MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) QuickTime (.mov, .qt) MPEG-4 TS (MPEG Transport Stream, .ts, .tsv, .tsa) VC-1 VP9 VOB (Video Object, .VOB) VRO (DVD-VR, .VRO) WebM |
Operating and storage conditions
There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.
| Operating temperature | 5 °C - 35 °C (degrees Celsius) 41 °F - 95 °F (degrees Fahrenheit) |
| Operating humidity | 20 % - 80 % (percent) |
