Farpoint FLEB67106 Emergency Light Bulb 3-in-1
This LED light bulb works like a regular bulb, but also turns on when the power goes out. Can even be used as a flashlight when you screw it into the included tail cap, which has a hook so you can hang it where you need it. Bulb is 1000-lumen and 10W with a 4000K color temp (soft white). As an emergency light, throws 200-lumens with a 3-hour run time.