Bluetooth Light Bulb LED controlled by Smartphone with free Apple / Android App, Dimmable and Multi Color Changing with Music mode for dancing light effect. Rgbw color changing 8W LED bluetooth 4.0 controlled light bulb The LED light bulb lasts 40 x longer than regular bulbs and saves energy costs Control the Color, Balance, Kelvin and saturation of light App includes 8 color changing Modes, a Timer and voice control function Music function makes the light change colors to the beat of any song on your phone.