Nebula by Anker Mars 3 Air review: Neat, bright, and not too pricey

A portable battery projector with all the trimmings and the most modern software can entertain but is it the best?

Nebula by Anker Mars 3 Air projector
(Image: © Future)

Digital Camera World Verdict

A quality projector with graceful design, surprisingly good speakers, and brightness that'll turn a room into a cinema at a very accessible price point. The claimed battery life is slightly optimistic, and perhaps the system software could be a little snappier, but overall it feels like good value.


  • +

    Built-in carry handle

  • +

    Effective auto keystone correction

  • +

    App control

  • +

    Sharp image, even up to 150 inches


  • -

    No USB-C (for power)

  • -

    Not use in rooms with daylight

  • -

    No USB-C (for digital video)

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The portable projector is an increasingly practical tool in the creative's toolkit; if you make videos there is much to be said for viewing them on the big screen (or reasonably white wall). Of course they're also great for watching movies and all your favourite video and indeed acting as a display if, like this, they have HDMI ports.

Nebula Mars 3 Air Specs

Native resolution: 1080P
Connectivity: Wi-fi, USB-A, HDMI, 3.5mm AUX
Throw: 1.2:1 ratio
Brightness: 400 ANSI lumens
Weight: 1.7kg / 3.75lb

Asus ZenBeam L2

The <a href="" data-link-merchant=""">Asus ZenBeam L2 is a pricier option in the same category and exactly same brightness, but it has two substantial improvements; it has USB-C port so you can charge without a dedicated brick, and the battery lasts longer.

Emotn N1

The <a href="" data-link-merchant=""" target="_blank">Emotn N1 is a cheap alternative that still has a 1080P image is also Netflix-approved, though lacks the Google TV and the battery – you'll need to find a power outlet, but it is reasonably quiet, has a good, bright image, wi-fi, and probably has the edge on sound too.

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Adam Juniper
Managing Editor

With over 20 years of expertise as a tech journalist, Adam brings a wealth of knowledge across a vast number of product categories, including timelapse cameras, home security cameras, NVR cameras, photography books, webcams, 3D printers and 3D scanners, borescopes, radar detectors… and, above all, drones. 

Adam is our resident expert on all aspects of camera drones and drone photography, from buying guides on the best choices for aerial photographers of all ability levels to the latest rules and regulations on piloting drones. 

He is the author of a number of books including The Complete Guide to Drones, The Smart Smart Home Handbook, 101 Tips for DSLR Video and The Drone Pilot's Handbook