Add color to your smart home with the 4-inch recessed retrofit downlight which offers 16 million colors and warm-to-cool white light Philips Hue downlights give a clean minimalistic look that keep the focus on your interior design. They feature Bluetooth capability for instant light control in one room. To unlock the full suite of smart light features including the ability to control more than 10 lights even while away from home simply purchase the Philips Hue Hub (Model 458471) Search "Philips Hue Hub" or "B016H0QZ7I" to find this product on Hubs are also available in select Hue Starter Kits.