This is a smart downlight from Philips Hue Series. This light can be controlled from smart phone (requires Philips Hue Bridge) or using Philips Hue Dimmer Switch or both. Light colour can be changed to any shade between Warm White and Cool White (2700k to 6500k). Also, the light is fully dimmable. Philips Hue lights can be synced with Music and Alarms. They can also be controlled via home automation devices like Alexa and Google Home.