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 Smaller Spaces: With a brightness 800 Lumen, these LED bulbs provide the right level of light that is bright enough to read on the couch, listen to music, or simply relax in your bedroom. Play with Colour - Choose from 16 million colours including warm to cool white light to create an ambiance that suits any mood. Play with colour to create the perfect ambiance for film nights, parties, bedtime stories, or to just sit back and unwind! 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.