Fast and efficient service. Goods as expected. Goods arrived undamaged.

Looks good. Have not tested yet.

Baseus as always pleases with quality. Well assembled. Nice plastic. Clear in use. Very compact. There is a ring mount in the car

Excellent Product

The build quality is very good. The device is very small and portable.
I am not so sure about the accuracy of measurement because the result is highly determined by the way you blow into device. It seems like 10cm recommended by the instruction manual is too big as blowing from that distance makes the device mostly showing 0.00% after several drinks. By some trials and errors I think the right distance, at least in my case, is 2...3cm and it requires only very light blowing.
Anyway it seems it's more an indicator than a accurate measurement device. But for the price is ok, you get for you pay for.