I’ve had this for about a month and have used it daily. The synchronize feature that adjusts the light brightness works very well. It’s my favorite feature by far. I also like the fact that the stem of the light has small holes which allow it to illuminate. As expected from a Dyson product, it looks great, is easy to setup out of the packaging, is stable and well built, and functions flawlessly. The app is easy to use. It connects to the app by Bluetooth, so you must be within range of the light to control it. This is not a problem but if it could hook up by wifi then you would be able to control it anywhere in the house (if needed) and also you’d be able to keep a Bluetooth connection on your phone open for other devices. This is a make or break at all but probably my only critical point about the product. Overall it’s great and well worth the investment. I highly recommend it.