Wi-Fi LED BC (B22) Opal GLS Dimmable Bulb, White + RGB 800 lm 9W - Link2Home L2HB229W, The Link2Home Wi-Fi LED Opal GLS Dimmable Bulb with RGB allows you to move across the white light spectrum, from a warm 2700K all the way to a cool 6500K. You can also choose from over 16 million different colours using the scroll wheel on the Link2Home Pro app (Free). Use the app to dim the bulb too. Control your home atmosphere via app control or voice. Using the Link2Home Pro app, you can set up precise timers that can be customised by days of the week. Set up countdown timers too. You can group multiple lights together to control one room, one house, or control each light individually. Fully integrated with Amazon Alexa and Google Assistant. Just ask your smart speaker to control your light device or group by saying 'Alexa turn on the hallway' or 'Hey Google! Turn the living room green'. System Requirements: Wi-Fi ConnectionMobile or tablet with iOS 8 or later, or Android 4.1 or laterLink2H