I got a pack of these smart light bulbs and was really excited to use them in my room. I really like the idea of being able to control them from my phone and change the colors or the brightness. Once you get them working their great but getting them working is a chore. I tried several different lamps and could only get them to work on two. I don't think it was the bulb but more the lamp but I wasn't able to figure out what. Once the bulbs are installed and linked up with the app, they work fine. They only desync from the app when the lamp is unplugged or it loses power. The colors are great and I love being about to lower the brightness, makes reading easier. Over all, they are great bulbs, just make sure they work with the lamps you got. 100% recommend.