Viewsonic LX720-4KB Projector

UHD 4K (3840x2160) · 3500 lumens · 1.125 - 1.463 · Standard throw

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Resolution UHD 4K (3840x2160)
Brightness 3500 lumens
Throw ratio 1.125 - 1.463
Type Standard throw

Viewsonic LX720-4KB Projector is a projector with UHD 4K (3840x2160) resolution and 3500 lumens of brightness. For a lit room, look for 3,000 lumens or more. It came out in 2025.

Released: 2025-12-19

Specifications

Key specs

Resolution: UHD 4K (3840x2160)
Brightness: 3500 lumens
Throw ratio: 1.125 - 1.463
Type: Standard throw
Released: 2025-12-19
Part number: LX720-4KB
EAN / UPC: 0766907034073

Projector

Screen size (max): 7.62 m (300")
Screen size compatibility: 1524 - 7620 mm (60 - 300")
Projection distance: 1.49 - 9.72 m
Projector brightness: 3500 ANSI lumens
Projector native resolution: UHD 4K (3840x2160)
Contrast ratio (typical): 1200:1
Native aspect ratio: 16:9
Number of colours: 1.07 billion colours
Horizontal scan range: 15 - 135 kHz
Vertical scan range: 23 - 240 Hz
Keystone correction, horizontal: +-40°
Keystone correction, vertical: +-40°
Matrix size: 1.19 cm (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

Light source type: Laser
Service life of light source: 20000 h

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Lens system

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%

Video

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

Ports & interfaces

HDMI connector type: Full-size
HDMI version: 2.0
USB 2.0 Type-A ports quantity: 1
Serial interface type: RS-232
PC Audio out: Yes
HDMI ports quantity: 2
Audio Return Channel (ARC): Yes

Network

Smart TV: Yes
Wi-Fi: Yes
Bluetooth: Yes
Bluetooth version: 5.0

Storage

Internal storage capacity: 8 GB

Features

Noise level (economic mode): 26 dB
HDCP: Yes
On Screen Display (OSD): Yes
On Screen Display (OSD) languages: Multi
HDCP version: 2.2
Noise level: 32 dB
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: Hybrid Log-Gamma (HLG)
Video apps: Disney+, Netflix, Roku Channel, YouTube

Multimedia

Built-in speaker(s): Yes
RMS rated power: 10 W

Design

Market positioning: Home cinema
Product type: Standard throw projector
Product colour: White
Cable lock slot: Yes

Power

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

Operational conditions

Operating temperature (T-T): 0 - 40 °C

Weight & dimensions

Width: 312 mm
Depth: 234 mm
Height: 104 mm
Weight: 3.5 kg

Technical details

Image lag time: 1 ms

Check the manufacturer's page before buying.

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About this product

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*.

User manual (PDF) · Datasheet (PDF)

LX720-4KB vs similar projectors

	Viewsonic LX720-4KB Projector	Viewsonic LX720-4KE Projector	Viewsonic LX720-4K Projector	Viewsonic LS710-4KE Projector
Resolution	UHD 4K (3840x2160)	UHD 4K (3840x2160)	UHD 4K (3840x2160)	UHD 4K (3840x2160)
Brightness	3500 lumens	3500 lumens	3500 lumens	3500 lumens
Throw ratio	1.125 - 1.463	1.125 - 1.463	1.127-1.465	1.06 - 1.45
Type	Standard throw	Standard throw	Standard throw	Standard throw
Released	2025	2025	2026	2024