Acer A740 4K Webcam

The Acer A740 is a USB webcam listed for 4K video, with autofocus, an integrated noise-reduction microphone and a physical privacy shutter. The listing also claims 4K at 30fps and 2K or 1080p at 60fps, plus a detachable magnetic mount for adjusting the camera angle.

At a glance

The listing claims 4K at 30fps, with 2K and 1080p modes at 60fps.
PDAF autofocus is claimed to lock onto and maintain focus on the subject.
A magnetic, detachable camera module is claimed to support 360° horizontal rotation and 90° up-and-down tilt.
An included USB-A to USB-C adapter is claimed to support connection to either port type.
The built-in microphone is described as noise reducing. The webcam does not have built-in speakers.
A physical shutter closes over the camera, and automatic low-light correction is claimed.

Price

£30.70Save 15%

Reference price: ~~£36.12~~

Price checked: 13 Nov 2026

View offer

Pros and cons

Pros

The stated 4K and 60fps lower-resolution modes offer a choice between finer detail and smoother motion, subject to the listing's mode claims.
The claimed detachable mount and angle adjustments give flexibility when framing calls, presentations or streams.
A built-in microphone and physical privacy shutter avoid relying on a separate microphone and a software-only camera control.

Technical specifications

25 specifications

Identity
Brand	Acer
Model	A740

Display and video
Video capture resolution	4K
Video capture format listed	MP4
Screen size	1

Camera optics
Sensor technology	CMOS
Optical sensor size	1/2.8-inch
Focus type	Auto Focus
Viewing angle	68.5 Degrees
Horizontal camera pan claimed	360°
Optical zoom	1 x
Digital zoom	4 x
Maximum focal length	26 Millimeters
Minimum focal length	10 Centimeters
Maximum aperture	2.8 Millimetres
Minimum aperture	6.3 Millimetres

Connectivity and controls
Connection listed	USB
White balance	Auto
Exposure control	Automatic

Dimensions and installation
Form factor	Compact
Weight listed	0.32 Pounds
Dimensions listed	44D x 49W x 60H centimetres

Materials and protection
Water resistance listed	Not Water Resistant
Image stabilisation listed	No
Colour	Black

What to know before buying

Listing details to confirm

Several camera details are inconsistent or unclear: the listing calls the product a webcam but gives a screen size of 1, labels USB as wireless connectivity, and lists 4K alongside an effective video resolution of 8.28 MP. It also gives optical and focal measurements in unusual or conflicting formats, including a 10 Centimeters minimum focal length and aperture values in millimetres. Confirm the intended specifications for your setup before purchase.

What’s in the box

4K webcamIncluded
USB-A to USB-C adapterCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

People who want a USB webcam for video meetings, online classes or streaming and can use the claimed 4K or lower-resolution 60fps modes.
Buyers who want a built-in microphone, camera privacy shutter and an adjustable mount in one device.

Less suited to

Anyone who needs built-in speakers, which the listing explicitly says are not included.
Buyers who need verified optical measurements, display specifications or a clearly documented connection type before choosing a camera.

Acer A740 4K Webcam · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 137 ratings

5 stars79%79%
4 stars11%11%
3 stars4%4%
2 stars2%2%
1 star4%4%

The supplied customer-feedback summary appears to describe a magnetic phone holder and golf-cart use, not this webcam, so its comments about magnets, picture quality and setup cannot reliably inform a decision about the A740. The separate aggregate ratings are mostly five-star, but ratings alone do not establish webcam-specific strengths or explain the less positive responses.

Frequently asked questions

What video modes does the Acer A740 claim to support?

The listing claims 4K at 30fps and 2K or 1080p at 60fps. These are listing specifications, not independently verified performance.

Does the A740 have a microphone and speakers?

It has a built-in microphone described as noise reducing. The listing says it does not include built-in speakers.

What comes in the box?

The explicit box-contents field lists a 4K webcam. A feature claim also says a USB-A to USB-C adapter is included, but that adapter is not in the box-contents list, so confirm it with the selected listing.

Can the camera be repositioned?

The listing describes a detachable magnetic mount with claimed 360° horizontal rotation and 90° up-and-down tilt.