Smart light bulbs aren't exactly new, but nearly all require your input to get the most out of them. Which makes the Stack Alba Responsive Lightbulb different. This intelligent LED lighting system uses integrated ambient light sensors to automatically maintain lighting levels without wasting energy and adjust the color temperature to match the situation — like cool light during the day for productivity, and warm light during the evening for relaxation. Motion sensors know to turn off the lights when you're not around, and the bulbs also communicate with an app to sync with your alarm and wake you up gently. Most importantly, it learns from your input, so as time goes on, it just works — giving you one less thing to fool with.