Nebula Cosmos 4K SE
#11 in 4KFull review
A bright 4K Google TV projector for living rooms and gaming that you can move between rooms. It is a step up in brightness from most portables.
Amazon $1,099.99$1,099.99
The Nebula Cosmos 4K SE is the better projector overall, rated 4.2 to 4.1. The XGIMI Elfin Flip 4K wins on gaming and setup. The XGIMI Elfin Flip 4K costs $250.99 less ($849 vs $1,099.99).
XGIMI Elfin Flip 4K
#14 in 4KFull review
A compact 4K laser projector for bedrooms and small rooms that need to move it around, with Google TV and real optical zoom.
Amazon $849$849
Prices were last checked October 29, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the XGIMI Elfin Flip 4K for gaming (1 ms input lag vs 19 ms input lag) and setup (Autofocus, auto keystone, 1.3x zoom vs Autofocus, auto keystone).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4K projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Nebula Cosmos 4K SE | XGIMI Elfin Flip 4K |
|---|---|---|
| Overall rating | 4.2/5 | 4.1/5 |
| Brightness 25% | 62 1,800 ANSI lumens | 56 1,600 ISO lumens |
| Value 15% | 82 $0.61 per lumen | 86 $0.53 per lumen |
| Resolution 10% | 100 4K (pixel shift) | 100 4K (pixel shift) |
| Streaming 15% | 100 Google TV with licensed Netflix | 100 Google TV with licensed Netflix |
| Setup 10% | 60 Autofocus, auto keystone | 80 Autofocus, auto keystone, 1.3x zoom |
| Light life 10% | 100 30,000 hour hybrid laser | 50 light source life not published (neutral score used) |
| Gaming 10% | 74 19 ms input lag | 100 1 ms input lag |
| Warranty 5% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Independent measurements
Nebula Cosmos 4K SE
No independent test published yet.
XGIMI Elfin Flip 4K
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| Laurent Willen | 1,061 lm | - | - | 1,061 lumens in Vivid at laser level 10; 823 to 871 in Movie, Standard, Game and Sports |
Specifications
| Nebula Cosmos 4K SE | XGIMI Elfin Flip 4K | |
|---|---|---|
| Picture | ||
| Brightness | 1,800 ANSI | 1,600 ISO |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 4K (pixel shift from 1920x1080) |
| Display | DLP | DLP |
| Light source | hybrid laser | RGB laser |
| Light source life | 30,000 hours | - |
| HDR | Dolby Vision | HDR10, HLG |
| Color gamut | 123.3% Rec.709 | - |
| Dynamic contrast | - | 20,000:1 |
| Placement | ||
| Throw | Standard throw (1.2:1) | Short throw (1:1) |
| Largest image | 200 in | 200 in |
| Autofocus | Yes | Yes |
| Auto keystone | Yes | Yes |
| Obstacle avoidance | Yes | Yes |
| Auto screen fit | Yes | - |
| Optical zoom | - | 1.3x |
| Streaming and gaming | ||
| Built-in apps | Google TV, licensed Netflix | Google TV, licensed Netflix |
| Input lag | 19 ms | 1 ms |
| Top refresh rate | - | 120 Hz |
| HDMI ports | 2 | 2 |
| eARC | Yes | Yes |
| Speakers | 30 W | 7 W |
| Build | ||
| Battery | None | None |
| Fan noise | - | 28 dB |
| Power | - | 120 W |
| Dimensions | 263 x 165 x 265 mm | 9.65 x 3.07 x 10.0 in (W x D x H) |
| Weight | 9.9 lb | 3.4 lb |
| Warranty | - | 1 years |
| Released | 2024-09-05 | 2026-07-15 |