Works with Alexa for voice control (hub required)The Friends of Hue LightStrips use LED technology to deliver up to 80 percent energy savings and a long life of 20,000 hours (up to 18 years)Gives you total control over your lighting from your smart phone or tablet - even when you're away from homeThrough your smart phone or tablet, recreate millions of different colors, set timers and alarms, connect to your favorite apps and dim the light (cannot be used with conventional dimmers)Control up to 50 Hue and Friends of Hue products on a single Philips Hue bridge - also compatible with Zigbee certified and Wink home automation network productsSingle pack includes one LightStrip - Requires a Hue starter kit or compatible bridge for dimming and smart control