I have it for a day, I share a review to help with the setup with smart devices.
Initially, it can be connected with the Yeelight app and Xiaomi's MiHome app.
If it doesn't appear when adding devices in either of the apps, reset it by holding the central and side volume touch buttons for 5 seconds, until it changes multiple colors.
Only after connecting to the above, you can add it to Homekit and Google Home. However, for Google Home specifically, it only works through the synchronization of the Yeelight app and not the MiHome app.
I hope I helped those struggling with the connection.

Colors and handling through mobile OK and light quite powerful if needed and quite low not to bother. I bought it because it theoretically turns on with a double tap. It often plays. But if it's closed for a long time, it may do something in power management and it doesn't turn on at all. If I unplug it from the power, it plays again... or if I hit it 7-8 times, it might wake up.

Very good and useful bedside lamp.
Satisfied with the light it emits.
The knock function is very useful for opening and closing

The only reason I give it one star is that I can't connect it to Google Home, so I can't control it along with all the other lights. Other than that, it's a beautiful and discreet source of lighting that meets the needs for next to the bedside table.

Good but not so powerful lighting that you can, for example, read a book. Otherwise, it is shapeless, with easy connectivity and various "clever" features such as opening and closing with a double tap of the fingers next to or on the device, etc

In the positives, it turns on with 2 taps, you don't need to search for the switch, and it is small in size, taking up no space on the nightstand.

In the negatives, it doesn't have enough strong light, you can't read at all. Also, the package only includes the USB cable and not the charger.

If I could turn back time, I would buy a classic lamp and use a smart LED bulb. A smart bulb is at 800lm Dimmable while the lamp is at 240Lm.

Exactly what it promises. An alternative form of lighting that can play according to our moods. Elegant in any space because it is not bulky or unattractive. The lighting is absolutely satisfactory in terms of intensity! However, there must be the corresponding application on the mobile in order for someone to take advantage of all the capabilities of the lamp, as it is fully customizable according to each person's needs. Slightly expensive, but at least so far (1 month after purchase) it seems to be worth its cost.

A light fixture that truly changes your mood with the change of colors. Good use with its own app. I connected it with Apple home kit but it's not as user-friendly as its own app. I bought it for 55€ and I consider it a bit expensive. If the price drops significantly, I might get a second one