What's Required? – Nothing! This product works out of the box with the free ‘Philips Hue Bluetooth’ app. Simply screw in your new bulb and connect to the Bluetooth app for in room smart lighting control! Designed For Full Rooms: With a brightness of 470 lumen, these smart LED bulbs provide the right amount of light to fill areas of your living room or kitchen. Set The Right Mood With Soft White Light: Hue bulbs and light fixtures use a soft white light. Dimmable from bright daylight to low nightlights, these smart lights allow you to fill your home with just the right level of warm light when you need it. Control Lights With Your Voice - Works with all Echo smart speakers/displays and Google Nest devices for hands-free voice control (Philips Hue Bridge (sold separately) is required for Echo 1st Gen and Echo Dot 1st Gen). Unlock Your Homes Full Potential – Add a Philips Hue Bridge (sold separately, optional) to your cart and unlock full home control, either when you’re home or away.