Link2Home L2HB229W Wi-Fi LED BC (B22) Opal GLS Dimmable Bulb, White + RGB 800 lm 9W LTHB229W

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.

System Requirements:
Wi-Fi Connection.
Mobile or tablet with iOS 8 or later, or Android 4.1 or later.
Link2Home Pro Account (Free).