The VL7860's body is about 50cm long, and 33cm wide - but it can throw a 120in, 3840 x 2160 resolution picture using similar Texas Instruments tech found in the Benq X12000 does.
The chip inside has a lower-than-4K resolution, but the rapid mirror switching between two lower resolution images creates a 4K image indistinguishable to the human eye.
Combine that with a claimed maximum contrast ratio of 1,500,000:1, and a brightness of 3000 lumens, it's a pretty impressive set of specs for such a small device.
If you don't immediately have some speakers available, the VL7860 also has a couple built-in to boost its appeal.
Read more: Sony launches three new 4K HDR projectors
More after the break
It also has a big brother, dubbed the P8800, which uses the same procesing tech as its sibling, and also boasts support for HDR. You also get a claimed brighter output - 5,000 lumens - and a 1.96X motorized zoom versus the 1.6X zoom of the VL7860.
Pricing and availablity are yet to be confirmed, but we've reached out to Acer for more information.