NEBULA Cosmos 4K SE Smart Projector
- Native Resolution: 3840 x 2160
- Display Resolution Maximum: 4K
- Brightness: 1800 lumens
- Projector Maximum White Brightness: 1800 lumens
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0DBQ7XP2HModel: D2342Category: Video Projectors
Overview
The Cosmos 4K SE is Nebula's high brightness 4K home projector, combining an LED laser HybridBeam light source with Dolby Vision and built-in Google TV. It is positioned for home theater and living room use where a bright, true 4K image is the priority.
But there is also a detailed one star account of ongoing reliability problems, frequent recalibration, audio cutting out, and a failure to power on after a cold start, so buyers should weigh both sides rather than assume every unit behaves the same.
- 1,800 ANSI lumens via HybridBeam LED laser engine
- True 4K resolution with Dolby Vision
- Built-in Google TV with native 4K Netflix
- Automated autofocus, keystone and obstacle avoidance setup
Who it's for
Fits someone setting up a home theater, patio or backyard screen who wants true 4K with Dolby Vision and built-in streaming through Google TV, without needing an external HD dongle. Less appealing to someone who has been burned before by projector reliability issues and wants a proven track record over raw specs.
Pros and cons
- Built-in Google TV with native 4K Netflix, no external dongle
- Automated autofocus and keystone setup
- One detailed review reports recurring recalibration and power on issues
- Setup got stuck on the entry screen for at least one buyer, requiring a hard reboot
- Audio cutting out reported by at least one user
Specifications
| Brand | Nebula |
|---|---|
| Model | D2342 |
| Dimensions & fit | |
| Maximum Image Size | 200 Inches |
| Minimum Image Size | 20 Inches |
| Item Weight | 9.9 pounds |
| Item Dimensions L x W x H | 10.3 × 6.5 × 10.3 inches |
| Power & efficiency | |
| Wattage | 40 watts |
| Construction & materials | |
| Color | Gray |
| Compatibility & installation | |
| Hardware Connectivity | Bluetooth, HDMI, USB |
| Connectivity Technology | 3.5mm Jack, Bluetooth, HDMI, Wi-Fi |
| Mounting Type | Floor Mount |
| Other details | |
| Native Resolution | 3840 x 2160 |
| Display Resolution Maximum | 4K |
| Brightness | 1800 lumenslower than 52% of 26 video projectors |
| Projector Maximum White Brightness | 1800 lumenslower than 54% of 25 video projectors |
| Contrast Ratio | 400:1 |
| Minimum Throw Distance | 5.5 feethigher than 97% of 34 video projectors |
| Maximum Throw Distance | 15.7 feetlower than 56% of 35 video projectors |
| Display Type | LED + Laser |
| Form Factor | Portable |
| Light Source Operating Life | 25000 hourslower than 85% of 21 video projectors |
| Control Type | Push Button, Remote |
| Video Encoding | HEVC (H.265), VP9 |
| Mfr Part Number | D2342111 |
| BuiltIn Media | Remote |
Closest rivals on specs
BenQ TH671ST 1080p Short Throw Projector- Brightness 1800 vs 3000 lumens (-40%)
- Minimum Throw Distance 5.5 vs 5 feet (+10%)
AKASO WT50 Mini Projector with WiFi and Bluetooth- Brightness 1800 vs 50 lumens (+3500%)
- Light Source Operating Life 25000 vs 30000 hours (-17%)
- Maximum Throw Distance 15.7 vs 13.8 feet (+14%)
Hisense M2 Pro Triple Laser Portable Projector- Maximum Throw Distance 15.7 vs 18.8 feet (-16%)
- Minimum Throw Distance 5.5 vs 4.7 feet (+17%)
- Projector Maximum White Brightness 1800 vs 1300 lumens (+38%)
Frequently asked questions
Does the NEBULA Cosmos 4K SE have built-in Google TV?
Yes, it runs Google TV natively, including 4K Netflix, without needing an external streaming device.
How bright is the NEBULA Cosmos 4K SE projector?
It is rated at 1,800 ANSI lumens using Nebula's HybridBeam LED laser light source.