Thought some of you might find this useful. I came across it and had my doubts since the description is in marginal English but it seems to do what it says. Dropped to -40 pretty quickly. The freeze button forces the compressor to run non-stop for 48 hours so when you are using under load it will get to the target temp quickly. My lowest temp thermometer errored out at -44 and strangely the readout on the fridge stayed at -39. I’ll need to dig up an ultra low thermometer to see what this can really do but for the price it is solid performance



-Eskander
https://www.amazon.com/gp/aw/d/B095WKJM8P?ref=ppx_pt2_mob_b_prod_image