2nd time buy LED light strips and they were great. These light strips were easy to connect and with Bluetooth already active on my phone they connected as soon as I opened the app. The course are really bright and the choices are everything with a colour wheel and even the ability to select colours from a picture. They music skill uses the built-in microphone on your phone to match with any sound it hears. (Kinda just flashes when it hears something). Many effects and I commonly have mine set to rainbow pulsing. I placed the strips behind my monitor and they work great. The one thing I don't love is that these aren't modular and you can no add wifi connectors to make to strips with Alexa. So they do not work with any smart home devices. Worth It.