Philips Hue White A19 Single LED Bulb Compatible with Alexa (Hue Hub Required) Philips Hue White A19 4-Pack 60W Equivalent Dimmable LED Smart Bulb Philips Hue Compatible with Alexa, Apple HomeKit and Google Home, powered by the Google Assistant, to allow you to control your lights with your voice Use as a wake-up light and feel refreshed with light that increases gradually The iOS or Android app controls lights remotely wherever you are Must use with Philips Hue Bridge to get full functionality (sold separately)