From V-Tac a cost effective and energy efficient 5w alternative to a traditional 27 watt spotlight. This dimmable GU10 lamp by V-Tac will emit 290 lumens of a fully colour temperature changeable colour - ranging from warm white to daylight as well as a full RGB spectrum. This bulb benefits from an impressive 30000 hour lifespan and thanks to integrated Wifi technology is compatible for use with Amazon Alexa and google home devices. Product Dimensions Diameter 57mm x Length 50mm.