Replaces standard A19 light bulbs – screw into your desired indoor or covered outdoor fixture and shine 800 lumens of light (60W equivalent brightness) where you need it most. | Ring Bridge required (sold separately, available in Starter Kits) – to enable smart features, such as mobile notifications and customizable settings, connect to a Ring Bridge. | Smart features – when connected to a Ring Bridge, get mobile notifications, set schedules, turn lights on and off remotely, customize settings, and connect to other compatible Ring devices – all from the Ring app. | Easy setup – screw into a compatible fixture, connect to the Ring Bridge, and customize your settings via the Ring app. | Energy efficient, long-lasting LED bulb – the A19 Smart LED bulb has an estimated lifespan of 25,000 hours and an estimated yearly energy cost of $1.02 (based on 3 hrs/day, 11c/cWh). Cost depends on rates and use. | Works with Alexa – pair with select Alexa-enabled devices via the Ring Bridge to turn lights on and off at the sound of your voice. | Ring of Security – group your Ring Smart Lights together and connect to your other compatible Ring devices through the Ring app to always know what’s happening around your home.