Works well. I though it had a clock but it doesn't. Attention must be paid to the coupling of the duct and the blower outlet as it may not allow the flaps (outlet) to open if the duct is not fully stretched out in the duct connection. It is a bit noisy at full speed (F4) and may vibrate, that could be attributed to small motor imbalance at the highest speed.

If only consider the product feature, I would give 5 star, 900 CFM provides very good power while the noisy is pretty low( much lower than my previous one ), I would say it's pretty quiet for this level of CFM. And its touchless gesture feature makes the operation very simple and clean -- avoid finger print on the screen. However the following matters made me very frustrate: 1. The pack is so cheap which couldn't provide good protection to product for transporting. The one I received got obvious dent in more than one place. One dent is on side which is visible, then other one is on the back could be hidden but made it hard to attach to the wall flatly hence hard to hang it 100% level. I definitely should request a exchange but I do need it in rush ( I already waited for quite a while, I ordered on De 23 , the estimate delivered date is Jan 3- Jan 7, but delivered on Jan 9, my kitchen could not afford further waiting ) so I just kept it. 2. The instruction was not very clear, spent quite some time to figure out all features