What's required? Nothing! This product works out of the box with the free `Philips Hue Bluetooth? app. Simply screw in your new GU10 perfect fit bulb and connect to the bluetooth app for in-room smart lighting control! With no complex installation required you can start controlling your smart LED lights straight out of the box with your smart device or voice. Discover the easiest way to control your lighting. Choose from 16 million colours including warm to cool white light to create an ambience that suits any mood. Play with colour to create the perfect ambience 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). Add a Philips Hue bridge (sold separately, optional) to your cart and unlock full home control, either when you?re home or away. Sync your light with your music, movies and games.