What is the input lag of the PX748-4K and how do I activate it?

The PX748-4K operates with a 240Hz refresh rate and a 4.2ms response time (input lag). To enable the 4.2ms input, turn it on via advanced settings and set the refresh rate to 240Hz. Reaction time is based on DMD chip.

What is the optimal throw distance for a clear 4K image?

The recommended max throw distance to display a clear 4K 300” image is 32 ft.

What is the optimal screen size for a clear 4K image?

The PX748-4K can display a clear 4K image from 30” to 300”.

If a Chromecast is attached to the projector, can I use the projector to supply power?

Yes. A built-in USB power output (5V/1.5A) can be used to supply power to wireless dongles like Chromecast or Amazon Fire TV stick.

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Description

🎥 Elevate your entertainment—big screen brilliance, zero compromise!

EFFORTLESS SETUP - Auto horizontal/vertical keystone correction and 1.3x optical zoom make installation seamless on any surface, from flat walls to curved screens.
CINEMATIC BRILLIANCE - Experience stunning 4K UHD visuals with 4000 lumens brightness and HDR support for vibrant, true-to-life colors anytime, day or night.
MASSIVE SCREEN IMPACT - Project up to a jaw-dropping 300-inch display for immersive home theater experiences that will make your space the envy of your friends.
VERSATILE CONNECTIVITY - Dual HDMI ports plus USB-C and LAN control ensure compatibility with all your devices—gaming consoles, PCs, streaming dongles, and smart home systems.
GAME CHANGER PERFORMANCE - Ultra-low 4.2ms input lag combined with a blazing 240Hz refresh rate delivers buttery-smooth gameplay on the big screen—never miss a frame.

The ViewSonic PX748-4K is a powerhouse 4K UHD projector boasting 4000 ANSI lumens brightness, HDR/HLG support, and a 12000:1 contrast ratio for vivid visuals. Designed for gamers and cinephiles alike, it features an ultra-low 4.2ms input lag and 240Hz refresh rate for smooth, responsive performance. Easy to install with auto keystone and optical zoom, it supports multiple devices via HDMI, USB-C, and LAN, projecting up to 300 inches for an immersive home theater or gaming setup.

Specifications

Brand	ViewSonic
Manufacturer	ViewSonic
Model	PX748-4K
Model Name	PX748-4K
Model Year	2021
Product Dimensions	10.92 x 30.99 x 22.1 cm; 1.27 kg
Batteries	2 AAA batteries required.
Item model number	PX748-4K
Hardware Interface	USB
Response Time	5 Milliseconds
Resolution	4K
Compatible Devices	Personal Computer
Special Features	Built-In 3d
Mounting Hardware	Power Cord, Projector, Remote, USB Type C cable,, User Manual
Number of items	1
Display Technology	DLP
Standing screen display size	300 Inches
Display Type	DLP
Image Aspect Ratio	16:9
Image brightness	4000
Image contrast ratio	12000:1
Aspect Ratio	16:9
Screen Resolution	3840 x 2160
Resolution	2160 Pixels
Maximum vertical resolution	2160 Pixels
Noise Level	33 dB
Voltage	12 Volts
Wattage	310 Watts
Power Source	Information Not Available
Batteries Included	No
Batteries Required	No
Refresh Rate	240.
Total USB ports	1
Connector Type	Ethernet, HDMI, USB
Form Factor	Portable
Mounting Type	Tabletop Mount
Does it contain liquid?	No
Includes Rechargeable Battery	No
Includes remote	Yes
Manufacturer	ViewSonic
Country of Origin	China
Item Weight	1 kg 270 g

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