A colour changeable 4.5w LED GU10 bulb by V-Tac. The smart light bulb by V-Tac offers an impressive 20000 hour lifespan and will emit a choice of colour temperature outputs ranging from warm white (3000K) cool white (4000K) and daylight (6000K). It is also compatible with smart home system products Google Home and Amazon Alexa. V-Tac also offer an excellent mobile phone application that is compatible with this bulb using this will allow complete control via your phone. The bulb is dimmable and provides 360 lumens of light. Perfect addition to homes creating a fully smart operated hub! Please note that the true colour output of lighting products should be based only on the Kelvin rating. The descriptors warm white cool white daylight etc are used only as guides to describe the colour of the light and can vary between brands.