They also work with devices like Amazon echo units, so you can turn the bulbs on or off with a voice command. If you have more than one bulb, you can set them as a group in the Alexa app and have all the bulbs in the group turn on or off at one time. They are pretty easy to install, assuming you are pretty good at connecting devices to your Wi-Fi network. You do need to download the Magic Home app and walk through the setup process. One thing to know, you need to have the lamp you plug it into already turned on when you screw the bulb in. Then the bulb will blink which tells you that it is discoverable to your network. If you screw the bulb in, then turn the lamp on, the bulb may not be discoverable by your Wi-Fi network. Once the bulb is set up, you just leave your lamp on and let the bulb turn on and off.
I definitely recommend this to anyone who likes smart home devices. If you are technophobic though, setting it up will probably make you go mad. Once it is set up, even if you are not all that technologically inclined they are pretty easy to use. And, I have not had an issue with them having to be reset even if my wireless network goes down. They reconnect themselves without a problem. They are definitely worth the price as long as you are willing to handle the setup process.