Enjoy a simple smart homeThe W4 Bulb works with major smart home platforms such as Google Assistant, Amazon Alexa and SmartThings. You can adjust the light with a touch in the Yeelight app anytime, anywhere. Easy setupEnjoy easy setup with built-in Wi-Fi and no hub. Unlike a professional installation, you can complete the entire process yourself. Group and remote controlTo optimally illuminate every corner, you can control multiple lights at the same time, allowing you to set the atmosphere for the entire room. You can change this at any time with a simple voice command or a touch in the app. Dimmable to create a cosy atmosphereThe warm white light bulb is dimmable and the colour temperature can be adjusted. With a colour temperature of 2700K, you can create a cosy and relaxing atmosphere for your home. Features: Smart lamp WLAN Dimmable Rated power: 9W /230V Lamp holder: E27 Luminous flux: 806lm Colour temperature: 2700-6500K Connectivity: BLE+ Wi-Fi 2.4 Ghz Working temperature: -10°C - 40°C.