Good stuff, but remember to set China as location in the app. At least I didn't find the downlight in the device list when choosing a european country. And note that you must do this at the initial setup of the app, as changing the country afterwards to China is not possible. Keep this in mind, and you will be happy with these downlights :-)
Good day, the product came fast. Packed securely. The quality is good, every light works well and connects to WiFi. I like the way they turn on: slow increase in brightness after pressing the switch. Looks modern. However, I am disappointed that it has only 200 lumens of light and its glow is too dim, eventhough I have little rooms (bathroom, kitchen and WC). I will definitely change them to the newer Bluetooth-mesh version, because they have 300 lumens of light and more LEDs inside.