This has been up for a few weeks and actually looks like a nice device.
However a look at the pictures show that it seems optimized to show the most bars (finest resolution) in the 60-80% range, and below that it is coarse resolution.
This might be the typical range in Asian countries where this is in no doubt made. But in US we often have humidity <50% and sometimes much lower. It has a digital display but I think that is only for temperature unless there is a way to switch it to display accurate humidity. I was going to buy it until I was forced to conclude that below 60, the best it can show is 35, 40, 45, 50, 55, 60 and then 61, 62, 63, etc. Perhaps I’m wrong in assuming that but that is what it looks like. Only reason I didn’t order one so far.