Never be in the dark again with our 12" LED Quartz Light Sensor Wall Clock. As dusk approaches, our 12" diameter quartz clock's integrated sensor uses night vision technology to automatically turn on the clock's back light, yet shuts off as soon as dawn arrives. Not only does our clock's built-in sensitive LED'S emit a soft green glow to help tell time better, but it doubles as a night light as well! Great for the kitchen, hallways, garage, home office and more! Each measures 12" Diameter and requires 4 AA Batteries (Not Included). By Jumbl.