Whole Home Smart Lighting: Bluetooth Low Energy (BLE) Mesh 5.0 wireless technology allows for a farther reach, enabling whole-home installations. Each A19 smart bulb multicolor serves as a signal repeater, so that even if a Bluetooth light bulb is out of reach from the Alexa Echo device, it can still be controlled using the Mesh network. Voice Control with Alexa: Use hands-free Voice Control to turn on, off, or adjust brightness of the Alexa light bulb. You can also use voice via smart home devices to use advanced features like wake-up routine or away mode. Brilliant Colors to Light Up Every Moment: Turn the color changing light bulb on/off, dim, brighten, set up routines, schedules, and more using the Amazon Alexa App. Use 16 Million brilliant and soft colors plus tunable whites to create the perfect mood; High brightness (800 lumens); Great for parties, entertaining and everyday use. Certified for Humans, struggle-free, tinker-free, stress-free. No patience needed – it's actually simple. Get Started in Seconds: Ultra simple Plug-n-Play setup. Simply twist in the Sengled smart light bulbs and start enjoying with Alexa smart devices in seconds (automatic linking to Alexa account required).