BenQ TH671ST
#5 in Native 1080pFull review
A bright short throw 1080p projector for gaming in small rooms, for buyers who don’t need 4K or HDR.
Amazon $849$849
The BenQ TH671ST is the better projector overall, rated 4.1 to 3.2. The BenQ TH671ST leads on brightness and warranty. The HAPPRUN K7 Pro Google TV wins on streaming and setup. The HAPPRUN K7 Pro Google TV costs $349.02 less ($499.98 vs $849).
HAPPRUN K7 Pro Google TV
#79 in Native 1080pFull review
A Google TV projector with streaming and auto setup in one box for movie nights. Its 3,000 ANSI rating isn’t credible, so expect a dimmer picture than the listing suggests.
Amazon $499.98$499.98
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 BenQ TH671ST for brightness (3,000 ANSI lumens vs listed 3,000 lumens rating not credible) and warranty (3-year warranty vs 1-year warranty).
- Choose the HAPPRUN K7 Pro Google TV for streaming (Google TV with licensed Netflix vs no built-in apps; needs a streaming stick) and setup (Autofocus, auto keystone vs Auto keystone, 1.2x zoom).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every native 1080p projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | BenQ TH671ST | HAPPRUN K7 Pro Google TV |
|---|---|---|
| Overall rating | 4.1/5 | 3.2/5 |
| Brightness 25% | 95 3,000 ANSI lumens | 0 listed 3,000 lumens rating not credible |
| Value 15% | 84 $0.28 per lumen | 50 no rated brightness (neutral score used) |
| Resolution 10% | 100 1920 x 1080 native | 100 1920 x 1080 native |
| Streaming 15% | 0 no built-in apps; needs a streaming stick | 100 Google TV with licensed Netflix |
| Setup 10% | 50 Auto keystone, 1.2x zoom | 60 Autofocus, auto keystone |
| Light life 10% | 69 15,000 hour lamp | 50 light source life not published (neutral score used) |
| Gaming 10% | 100 8 ms input lag | 50 input lag not published (neutral score used) |
| Warranty 5% | 100 3-year warranty | 0 1-year warranty |
Specifications
| BenQ TH671ST | HAPPRUN K7 Pro Google TV | |
|---|---|---|
| Picture | ||
| Brightness | 3,000 ANSI | 3,000 ANSI (listed, not credible) |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 1080p | 1080p |
| Display | DLP | - |
| Light source | lamp | - |
| Light source life | 15,000 hours | - |
| HDR | - | HDR10+ |
| Color gamut | 92% Rec.709 | - |
| Native contrast | 10,000:1 | - |
| Placement | ||
| Throw | Short throw (0.7:1) | Standard throw |
| Largest image | 300 in | 300 in |
| Autofocus | No | Yes |
| Auto keystone | Yes | Yes |
| Obstacle avoidance | No | - |
| Auto screen fit | No | - |
| Optical zoom | 1.2x | - |
| Streaming and gaming | ||
| Built-in apps | None | Google TV, licensed Netflix |
| Input lag | 8 ms | - |
| Top refresh rate | 120 Hz | - |
| HDMI ports | 2 | - |
| Speakers | 5 W | 20 W |
| Build | ||
| Battery | None | None |
| Fan noise | 33 dB | - |
| Power | 320 W | - |
| Dimensions | 296 x 224 x 120 mm (W x D x H) | 11.4 x 4.5 x 10.4 in |
| Weight | 6 lb | 7.1 lb |
| Warranty | 3 years | 1 years |
| Released | 2017-11 | 2026-08 |