Control up to 10 lights with the Bluetooth app Control lights with your voice* Create a personalised experience with colourful smart light Unlock the full suite of smart lighting features with the Bridge A perfect fit for spotlights, GU10 bulbs give you access to the best of smart lighting. With white and colour light as well as ultra-low dimming, these bulbs can help you create immersive experiences, support your routines and more. Features Software upgradeable Yes Number of switch cycles 50000 Deep dimmable Yes Dimmable Yes Rated lifetime 25000 h Bulb lifetime 25000 h Bulb power 4.2 W Power factor 0.5 Color Rendering Index (CRI) 80 Luminous flux 400 lm Colour temperature (max) 6500 K Colour temperature (min) 2000 K Light colour Variable Bulb size GU10 Bulb shape Spot Fitting/cap type GU10 Product colour White Interface Bluetooth/Zigbee Type Smart bulb Performance Works with Apple HomeKit Yes Works with the Google Assistant Yes Works with Microsoft Cortana Yes Works with Amazon Alexa