Nebula Cosmos 4K SE
#13 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 rates 4.2 among 4K projectors; the HAPPRUN K7 Google TV rates 3.2 among native 1080p ones. The HAPPRUN K7 Google TV costs $500 less ($599.99 vs $1,099.99).
HAPPRUN K7 Google TV
#78 in Native 1080pFull review
A Google TV projector with loud speakers and automatic setup for living rooms and backyard movies. The price is high for a 1080p LCD model with unverified brightness.
Amazon $599.99$599.99
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.
Scores side by side
These two sit in different type classes (4K and native 1080p), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Nebula Cosmos 4K SE | HAPPRUN K7 Google TV |
|---|---|---|
| Overall rating | 4.2/5 | 3.2/5 |
| Brightness 25% | 62 1,800 ANSI lumens | 0 listed 2,000 lumens rating not credible |
| Value 15% | 82 $0.61 per lumen | 50 no rated brightness (neutral score used) |
| Resolution 10% | 100 4K (pixel shift) | 100 1920 x 1080 native |
| Streaming 15% | 100 Google TV with licensed Netflix | 100 Google TV with licensed Netflix |
| Setup 10% | 60 Autofocus, auto keystone | 60 Autofocus, auto keystone |
| 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 | 50 input lag not published (neutral score used) |
| Warranty 5% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Specifications
| Nebula Cosmos 4K SE | HAPPRUN K7 Google TV | |
|---|---|---|
| Picture | ||
| Brightness | 1,800 ANSI | 2,000 ANSI (listed, not credible) |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 1080p |
| Display | DLP | LCD |
| Light source | hybrid laser | LED |
| Light source life | 30,000 hours | - |
| HDR | Dolby Vision | HDR10 |
| Color gamut | 123.3% Rec.709 | - |
| Placement | ||
| Throw | Standard throw (1.2:1) | Standard throw |
| Largest image | 200 in | 300 in |
| Autofocus | Yes | Yes |
| Auto keystone | Yes | Yes |
| Obstacle avoidance | Yes | - |
| Auto screen fit | Yes | - |
| Optical zoom | - | None |
| Streaming and gaming | ||
| Built-in apps | Google TV, licensed Netflix | Google TV, licensed Netflix |
| Input lag | 19 ms | - |
| HDMI ports | 2 | 1 |
| eARC | Yes | - |
| Speakers | 30 W | 20 W |
| Build | ||
| Battery | None | None |
| Dimensions | 263 x 165 x 265 mm | 10.63 x 8.54 x 8.28 in |
| Weight | 9.9 lb | 4.5 lb |
| Warranty | - | 1 years |
| Released | 2024-09-05 | 2026-07 |