Portable projectors are gaining popularity for home movie nights, camping trips, business travel, and on-the-go entertainment. Among the most compelling choices on the market are the Dangbei Freedo and Anker Nebula Mars 3 Air. Both offer Full HD resolution, smart features, and wireless connectivity—but they differ in key ways that might impact your experience.
This detailed comparison will walk you through the differences in brightness, sound, battery, projection flexibility, and smart features to help you decide which is the better fit for your needs.
The Dangbei Freedo is a compact, feature-packed portable projector built for versatility and ease of use.
The Anker Nebula Mars 3 Air is designed for immersive audiovisual experiences with rapid setup.
| Feature | Dangbei Freedo | Anker Nebula Mars 3 Air |
| Resolution | 1080P Full HD (4K input supported) | 1080P Full HD |
| Brightness | 450 ISO Lumens | 400 ANSI Lumens |
| Smart OS | Google TV (Netflix, YouTube, Prime Video, etc.) | Google TV (Netflix, Disney+, Hulu, YouTube) |
| Sound Output | 6W 360° speaker, Dolby Audio | Dual 8W speakers, Dolby Audio |
| Auto Adjustments | Autofocus, H&V keystone, screen fit, obstacle avoidance | IEA 3.0: All-in-one (3 sec smart setup) |
| Stand | Built-in 165° motorized gimbal stand | Handle only, tripod not included |
| Battery Life | ~2.5 hours video / 6 hours audio | ~2.5 hours video / up to 8 hours audio |
| Charging | USB-C PD fast charging, power bank compatible | USB-C PD fast charging, power bank compatible |
| Weight | ~1.4 kg | ~1.7 kg |
Both projectors feature Full HD 1080P resolution. Dangbei Freedo slightly outperforms with 450 ISO lumens vs. Mars 3 Air’s 400 ANSI lumens, providing brighter visuals in dim environments and clearer projection on larger screens.
✅ Winner: Dangbei Freedo, for higher brightness and better contrast.
Mars 3 Air includes dual 8W speakers, making it better suited for outdoor use or noisy environments. Freedo, with a 6W 360° surround speaker, offers rich and immersive audio, ideal for indoor and personal spaces.
✅ Winner: Mars 3 Air for louder output.
✅ Winner: Freedo for immersive sound in enclosed spaces.
Both projectors support approximately 2.5 hours of video playback, but Mars 3 Air extends its advantage with up to 8 hours of music playback. Both devices support USB-C PD fast charging and are compatible with power banks.
✅ Winner: Mars 3 Air, for superior audio endurance.
Both projectors offer comprehensive automatic adjustments:
Dangbei Freedo supports autofocus, horizontal and vertical keystone correction, screen fit, and obstacle avoidance.
Anker Mars 3 Air, with IEA 3.0, performs all these functions within 3 seconds for ultra-fast setup.
✅ Winner: Tie – Mars 3 Air for speed, Freedo for flexible projection angles via motorized gimbal.
Freedo’s motorized 165° gimbal stand enables effortless ceiling or wall projection without needing a tripod. Mars 3 Air, while portable with its handle, requires an external tripod or stable surface for angle adjustment.
✅ Winner: Dangbei Freedo, for its built-in gimbal and superior projection flexibility.
Both Dangbei Freedo and Mars 3 Air are strong contenders in the portable projector space. The choice depends on your personal use case:
Conclusion:
If you want premium visual and setup flexibility, go for Dangbei Freedo.
If you want robust audio and speedy performance, Mars 3 Air is your go-to travel companion.
Yes. Both come with certified Google TV and support native streaming apps like Netflix, YouTube, and Prime Video.
Dangbei Freedo is ideal for ceiling projection thanks to its motorized gimbal. Mars 3 Air requires a tripod or surface setup.
Mars 3 Air has louder speakers and longer music playback—ideal for outdoor settings.
Yes. Both support USB-C PD fast charging, compatible with 65W power banks.
Freedo doesn’t need one due to the built-in gimbal. Mars 3 Air does not come with a tripod—you’ll need to provide your own.