Nebula Mars 3 Air, 400 ANSI Lumen, DLP, 1080p (1920x1080), 16:9, 736,6 - 3810 mm (29 - 150"), 0,8 - 4 m

Good hardware, good picture, good sound. Clever and functional auto keystone. But the whole thing is let down by the awful operating system. It seems like Google TV has been shoehorned into an underpowered device and it's painful to use. Entire features don't work. Pairing with an external audio system over bluetooth is almost impossible and you can't cast to the projector without the entire Google TV ecosystem. When you do, the audio lag is more than the built-in adjustment allow and you're left with out of sync everything - all of the suggested fixes online don't work at all. It's awful! The supplied firmware was unusable and needed upgrading before anything worked at all. Also a disappointingly dull picture, and no, it's not in eco mode. Fine when plugged in via HDMI, but that's not what I want it for!

I’m really happy with this projector - mostly use it when it’s dark but have been using it a bit on daytime as well and had no problem seeing the image. The sound is great too, and it does work about 2.5 hours on battery. I use it for watching movies / YouTube / playing video games. Best purchase I made this year!

Connected to WiFi with ease and links to smart systems relatively quickly, the auto focus works well just needs a few attempts every now and then when switched on

Bought on the strength of glowing reviews from Which? and others. Mainly used to cast from phone/laptop, so built-in chromecast (google tv) a major selling point.Worked as expected initially, then began to lag, badly. BBC iplayer unwatchable, stuttering every 3-4 seconds. Factory reset didn't help and nor did suggestions from Anker support. NB: works fine with an old chromecast plugged into the hdmi - but rather defeats the point of built-in google tv.Anker support were responsive initially, but now say their engineers are working on it and a fix may take time - without being any more specific. Escalating my issue via Anker has produced no response. They've not suggested a replacement, which suggests it's not a rogue unit, rather a design issue with this model.I quite like the projector otherwise, so if you don't need to cast it may be ok for you - hence the 3 stars.If I hear from Anker I'll update this review. Otherwise, I'll return it as non-functional.

Very simple to use. Excellent picture and surprisingly good sound (think of a slightly inferior Sonos play speaker). Point at the wall and it auto corrects for jaunty angles. Super impressed and no regrets with the purchase.I did buy a case for storage as this will be mobile - it holds the projector, remote control and power supply.I also bought a small tripod to hold the projector which was a good investment.