NEBULA Cosmos Laser 4K Projector, 2200 ANSI Lumen, Android TV, Autofocus, Auto Keystone Correction, Screen Fit, Home Theater Projector with Wi-Fi & Bluetooth, for Office and Business Use (Renewed)

Better than I could have imagined easy user interface officially licensed apps make it easier to stream travel handle very useful and very clear bright pictures with vibrant colors. Great value for what you get especially if you use it Outdoors.

Absolutely impressed with the Nebula Cosmos Laser 4K ! Setup was super easy with auto-focus and keystone correction. The 4K laser projection is sharp and vibrant, even with some ambient light. Android TV runs smoothly, and the included dongle gives access to all major apps. Built-in speakers are decent for small to medium rooms. The design is sleek and portable with a sturdy handle. Perfect for home theater or backyard movie nights. Highly recommended for anyone looking for premium quality at a better price point!

The Nebula Cosmos Laser 4K is a disappointing upgrade that fails to justify its premium price tag and the refurbished one does not live up to Anker/Nebula build quality.. While it boasts 2,200 lumens brightness, the actual measured output in standard mode only reaches around 1,700 lumens, which isn't significantly better than the much cheaper Cosmos 4K SE's 1,800 lumens. The gaming performance is particularly underwhelming, with input lag measuring 65-68ms even in game mode, making it unsuitable for anything beyond casual gaming. This is especially frustrating when compared to the Cosmos 4K SE, which achieves an impressive 18.4ms input lag. The build quality leaves much to be desired, especially coming from the Mars 3 which features robust IPX3 waterproofing and drop protection. The Cosmos Laser 4K offers no such durability features despite its higher price point. While the laser light source promises 25,000 hours of life, the same longevity can be found in the more affordable Mars 3's LED system. The contrast and black levels, though better than some LED projectors, still fall short of expectations for a premium laser projector. For the price, you'd be better off considering alternatives like the Hisense L9G, which offers superior color performance. Even the more modest Mars 3 with its 1000 ANSI lumens and built-in 40W speaker system provides better value for money. The Cosmos 4K SE, at a lower price point, delivers comparable brightness and actually superior gaming performance, making the Laser 4K's premium price tag hard to justify.

Review for the REFURBISHED Nebula Cosmos Laser 4K I first got hooked on laser projectors with the Epson EF11, which I bought for about $800 new. Missing 4k and the brightness of a standard screen, I decided to track consumer grade projectors that had those features. I recently upgraded to a renewed Nebula Cosmos Laser 4k for the same price, $800. The projector is the best deal out there at that price. The unit is larger and heavier than expected, but the auto focus and auto keystone functions quickly adjust from having the projector off to the side due to its size. Because the left side of the projection surface is closer, it's somewhat brighter - noticeable only because the image is so bright. The on-board sound is good, with noticeable bass. Finally, I was surprised how quiet the fan runs compared to the Epson, which was 1/2 the lumens. Now I'm coveting the X1.

As others have mentioned the picture is crisp and clear even for 1080p movies at a large size, they look great. As expected, lights in the room on the screen do quickly degrade the quality when not using a good screen. 3D on this model is easy to set up using the device settings and is the best 3D I've seen when paired with good active 3D glasses. One last thing is sound quality. From the reviews, I had expected a decent loud audio from the unit and am now using a separate speaker for audio. For refurbished, this unit looked new and is very easy to set up.

I bought this alongside another cheaper non-laser projector, tested them both, and decided to keep the other one. Here are the pros and cons of this projector: Pros: - Picture quality was very good, contrast was better than the LED alternative. Audio was impressive as well. - Came with android TV 12 instead of version 10, which was a pleasant surprise. - I liked the idea of the dongle being replaceable, but I couldn’t find anything that indicated they intend it to be upgradable in the future. Cons: - The device doesn’t work without the dongle, for example, you cannot just hook up an HDMI device and project if the dongle is missing or broken. - Unlike the other LED projector I kept, this one cannot connect to a Bluetooth audio device like headphones or speakers if it’s taking the input from HDMI. So if you intend to use another dongle with this, you are restricted to the internal speakers or have to hook up to the aux port in the back. - YouTube playback even with 1080p was choppy, and the audio was choppy as well on Bluetooth headphones. I think the processor is not fast enough for the codecs. - The projector doesn’t have much of a vertical throw, meaning if you put it level on a table (like you would ideally want to), the bottom of the image will be below the projector’s level. So the tall projector and its bold handle will likely block the view. - The heavy and upright design of this projector makes it unstable on a tripod, it’s mostly intended to be used on a table, which makes positioning and adjustments difficult. All in all, audio/video is great but software and capabilities are limited for this price point. This could still work great for you if you want something simple, decent-quality, and portable, and the details above don’t really matter to you.

The image on this projector is amazing—even with the lights on in the room, it looks really good. I bought it from Amazon’s refurbished store, and while it works well and has great built-in sound, this one came with a couple of tiny white spots in the projection. I wanted to get it replaced, but I had just taken it as a gift to some family outside the U.S., and sending it back was too expensive. So we decided to keep it, but it would be good if Amazon checked their refurbished products more carefully

The brightness is underwhelming, and I'd give it 3 stars at best. While the speakers are loud, the sound quality lacks definition. The software is decent, but there's a major drawback: if the projector is placed at a skewed angle, you have to manually realign the screen each time, which becomes quite annoying since there's no option to save the screen alignment settings. I tried connecting it to a gaming computer, but the lag was severe—it’s definitely not suitable for gaming. It’s a more budget-friendly option, but you really do get what you pay for. I wouldn't recommend it if you're looking for performance and convenience. I returned it.

--One year review-- After LESS THAN A YEAR of light use, up to twice a week, the unit has no longer functions correctly after Anker forced a firmware update. Amazon should state clearly that warranty is only 3-months. The projector costs over a thousand dollars and breaks within one year...I took very good care of my Anker projector and even if I spent $1300, I treat the projector like I paid $10,000. Ultimately, the quality of projector is not good if the unit lasts only less than a year. Despite my efforts to prolong the lifespan of the Anker Nebula Cosmos 4K SE, Anker themselves broke it with their firmware update. --Original Review-- I read great reviews about the Nebula Cosmo 4K SE, so when I saw a refurbished model on sale I jumped to the chance to buy it right away. The price was too good to pass up. One thing that is understated in user reviews is the low contrast ratio. Even in a dark room with velvet wall curtains to absorb bounce light, the blacks levels on the projector are worse than bad. Another note is that this projector isn’t true native 4K. It uses a 0.47-inch native 1080p micromirror DLP chip that achieves 4K-like picture quality using pixel shifting technology. It’s 1080p native but shifts the sensor to a degree that it fakes a 4K image. Given the price point at which I bought it at, the image quality is fine minus the black levels. Another flaw about the projector is that it requires 1.5 meters for the auto keystone to come into effect. Out of the box I thought I got a lemon unit because the projector kept giving me a sensor error as it failed to keystone or focus. After moving the projector approximately 1.5m away from a wall the auto keystone worked as long as I go into the screen menu. Using the auto keystone button on the controller always led to a sensor error. Perhaps I did get a bad unit or it’s just a quirk of the firmware. The problem with video reviews on YouTube is that they don’t mention any of these issues about the required distance and janky auto keystone functions. I’ve had the projector for about 2 weeks and I must have seen the “Contact support” popup window at least 30 times. But, again…due to the price point, I can live with a few quirks. If your budget is under CAD$1400 after taxes this unit is fine….but if you have a larger budget of $CAD10,000 before taxes, save your money for a true 4K projector. This unit was in my price range….if you can afford something better, don't buy the Cosmos 4K SE.