Four stars because:
- The user instructions are printed on a very small piece of paper. I had to take photos of them with my phone and zoom in a lot to read them. Besides, they are poorly written.
- The temperature and humidity are not accurate. The sensors I have on a Raspberry Pi have a difference of at least 2 degrees Celsius and around 5+% humidity, which cannot be justified by their different positions in the room.

For a watch, it does its job very well. However, the humidity and temperature readings are completely wrong. The temperature is often close, but the humidity is inaccurate.

The wood imitation sticker had come off quite a bit on one end.

The clock is very bright for a bedroom. Even at the lowest intensity, it is still bothersome. If you want it for anywhere else, it's fine. The humidity and temperature indicators are relatively accurate.

If it is not plugged into the socket, the battery does not last at all.

Only a USB cable is provided, so if you don't have a USB socket from a mobile phone that you don't use, it's a problem.

Beautiful but looks fragile. It came with a scratched USB and without a charger (straightened with pliers) and the sticker representing the wood pattern was slightly peeled off (re-stuck with UHU).

It is in Ebony style color and looks like a piece of wood that surprises you when it lights up and displays the digital elements of the clock (time, humidity, temperature). It supports 3 alarms (indifferent) and has 3 lighting settings (satisfactory).

It has a hidden CRC2032 battery compartment to keep the time when there is no external power supply from the 3xAA batteries it takes or the power input (USB on one side, DC jack on the other).

It went to my wife's kitchen (screwed with two metal brackets above the extractor cabinet), it had a very good aesthetic result, and I would buy it again (15 euros).

It shows the temperature just fine.

Having another similar watch (Life in natural bamboo color) after a year of use, I discovered that it also has a computer battery inside and below the space for regular batteries.
If you find a transparent plastic piece coming out of the slot near the photo screw, pull it out and remove it.
This activates the internal battery and during any power outage, it will turn off to save energy for the display, but as soon as the power comes back on, it turns on without losing the settings!
Otherwise, it has reliable humidity and temperature measurements, alarm, etc.
To avoid constantly changing batteries, find an old phone charger and connect it with the USB cable from the packaging.
Flawless in terms of price as well!