Warm-to-cool white light: With their thousands of shades of warm-to-cool white light and ultra-low dimming, you can support your daily routines with just the right shade of white. More energy efficient: With a longer lifespan of 25,000 hours (compared to the previous generation’s 15,000 hours) and 50% lower standby power consumption than before, the new GU10 bulbs help you take a step toward a more energy efficient smart home. Brighter light: These bulbs offer 400 lumens at 4000 K, compared to the previous generation's 350 lumens, so you can light up the room even more. A perfect fit for spotlights: Philips Hue GU10 bulbs fit just like standard GU10s, but with smart capabilities — and a beautiful display of light. Add a Bridge: With a Philips Hue Bridge, you unlock the full suite of smart lighting features, including automations and away-from-home control.