LX720-4KB - VS20621,LX720KE-4K

Transform your home into a cinematic experience with the LX720-4KB smart laser projector. Equipped with 3rd-generation laser phosphor technology, it delivers 3,500 ANSI Lumens of brightness and up to 20,000 hours of lamp-free use, ensuring vivid visuals day or night. Enjoy immersive 4K HDR picture quality on screens up to 300 inches, paired with a built-in 10W cube speaker for rich, room-filling sound. With features like 1.3x optical zoom, H/V keystone correction, and four-corner adjustment, setup is simple and flexible. Plus, with Google TV and a native Netflix app, the LX720-4KB brings effortless streaming and premium entertainment into any room.

Reliable Performance for Endless Fun
The LX720-4KB adopts 3rd-generation laser phosphor technology for long-lasting, lamp-free performance. With a lifespan of up to 20,000 hours, there's no need for lamp replacements—delivering reliable, year-round entertainment while saving you time, effort, and ongoing maintenance costs.

Ultimate Viewing Experience with 4K HDR
Experience true 4K UHD clarity and dynamic visuals powered by HDR/HLG and 3D support*. The LX720-4KB features dual HDMI 2.0b and HDCP 2.2 ports to ensure native 4K quality, bringing your favorite games, sports, movies, and shows vividly to life.

Bright Images Anytime
Enjoy brilliant entertainment anytime—day or night. Whether it’s movie night with the family or a sunny afternoon game, the LX720-4KB shines with 3,500 ANSI Lumens of brightness, so you never miss a detail.

Bring the Big Screen Home
Turn any room into a personal theater with a massive screen size of up to 300 inches. From epic movie nights to gaming marathons and live concert streams, the LX720-4KB lets you bring everyone together for unforgettable moments on the big screen.

Crisp Sound, Right Out of the Box
Skip the speaker setup. With a built-in 10W cube speaker, the LX720-4KB lets you dive into movies, music, and more with crisp, room-filling audio right out of the box.

Big Screen, No Big Rearranging
The 1.3x optical zoom lens gives you flexibility to fine-tune placement and screen size, even if the projector isn’t mounted at the perfect distance. Get the image size you want without needing to reposition your ceiling mount.

Perfect Image Projection from All Angles
Thanks to flexible H/V keystone correction and 4-corner adjustment, you’ll get a perfectly aligned image even if the projector isn’t mounted perfectly centered. Whether it’s tilted down, angled up, or projected from the side, setup is easy and your picture stays sharp.

Stream Your Way, On the Big Screen
Stream smarter with built-in Google TV. The LX720-4KB comes ready to go with your favorite apps like Netflix, YouTube, and Disney+, no extra devices needed. Just sign in and start streaming. Prefer a device you already use? It also works smoothly with Chromecast, Apple TV, Fire TV, Roku, and more. Plus, the USB-A port lets you keep external streamers powered up without extra adapters.

Speed That Keeps You Ahead
The LX720-4KB supports 1ms ultra-fast input, a blazing 240Hz refresh rate, and near-instant response time, so fast-paced games, action scenes, and live sports play out with crystal clarity and no motion blur.

Wireless Screen Casting from Your Smart Devices
With fast, stable 5GHz Wi-Fi built in, casting from your phone, tablet, or laptop is easy and cable-free. Stream videos, share photos, or mirror your screen to enjoy your favorite content on the big screen—no extra setup required.

Bluetooth Sound Out, Your Way
Wirelessly stream audio from the projector to your Bluetooth headphones, letting you escape the outside world and fully immerse yourself in big-screen entertainment.​

Clean Setup. Big Sound.
With HDMI ARC, the LX720-4KB sends video and audio through a single cable—making it easy to connect to your sound system and keep your setup clean and simple.

Designed with Eye Care in Mind
The LX720-4KB is designed to reduce blue light and ease the strain on your eyes. Unlike traditional displays, it uses reflective light that bounces off the wall or screen before reaching you—so you can enjoy longer viewing sessions more comfortably.

Viewsonic LX720-4KB. Projector brightness: 3500 ANSI lumens, Projector native resolution: UHD 4K (3840x2160), Contrast ratio (typical): 1200:1. Light source type: Laser, Service life of light source: 20000 h. Focus: Manual, Focal length range: 11.9 - 15.5 mm, Aperture range (F-F): 1.94 - 2.12. Supported graphics resolutions: 640 x 480 (VGA), 3840 x 2160, Supported video modes: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Serial interface type: RS-232, HDMI connector type: Full-size

Projector brightness	3500 ANSI lumens
Projector native resolution	UHD 4K (3840x2160)
Contrast ratio (typical)	1200:1
Native aspect ratio	16:9
Smart projector	No
Screen size compatibility	60 - 300"
Projection distance	58.7 - 382.7" (1.49 - 9.72 m)
Number of colors	1.07 billion colors
Horizontal scan range	15 - 135 kHz
Vertical scan range	23 - 240 Hz
Keystone correction, horizontal	+-40°
Keystone correction, vertical	+-40°
Matrix size	0.47"
Horizontal synchronization (min)	15 kHz
Horizontal synchronization (max)	135 kHz
Vertical synchronization (min)	0.023 kHz
Vertical synchronization (max)	0.24 kHz
Light source type	Laser
Service life of light source	20000 h
Focus	Manual
Focal length range	11.9 - 15.5 mm
Aperture range (F-F)	1.94 - 2.12
Zoom capability	Yes
Optical zoom	1.3x
Throw ratio	1.125 - 1.463
Offset	110%
Full HD	Yes
3D	Yes
Supported graphics resolutions	640 x 480 (VGA), 3840 x 2160
Supported video modes	480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p
VGA (D-Sub) ports quantity	0
HDMI ports quantity	2
Composite video in	0
Component video (YPbPr/YCbCr) in	0
DVI port	No
Audio (L/R) in	0
Serial interface type	RS-232
HDMI connector type	Full-size
HDMI version	2.0
USB 2.0 Type-A ports quantity	1
PC Audio out	Yes
Audio Return Channel (ARC)	Yes
Smart TV	Yes
Wi-Fi	Yes
Bluetooth	Yes
Bluetooth version	5.0
Internal storage capacity	8 GB
Noise level	32 dB
Noise level (economic mode)	26 dB
HDCP	Yes
On Screen Display (OSD)	Yes
On Screen Display (OSD) languages	Multi
HDCP version	2.2
High Dynamic Range (HDR) supported	Yes
High Dynamic Range (HDR) technology	Hybrid Log-Gamma (HLG)
Video apps	Disney+, Netflix, Roku Channel, YouTube
Built-in speaker(s)	Yes
RMS rated power	10 W
Product type	Standard throw projector
Market positioning	Home cinema
Product color	White
Cable lock slot	Yes
Built-in display	No
Power source	AC
Power consumption (typical)	212 W
Power consumption (standby)	0.5 W
AC input voltage	100 - 240 V
AC input frequency	50/60 Hz
Operating temperature (T-T)	0 - 40 °C
Weight	7.72 lbs (3.5 kg)
Width	12.3" (312 mm)
Depth	9.21" (234 mm)
Height	4.09" (104 mm)
Package width	16.3" (415 mm)
Package depth	6.61" (168 mm)
Package height	11.7" (297 mm)
Package weight	10.1 lbs (4.6 kg)
Handheld remote control	Yes
Cables included	AC
Manual	Yes
Quantity per pack	1 pc(s)
Screen size (max)	300"
Image lag time	1 ms