REMAINS ON EVEN WITHOUT POWER FOR UP TO 12-HOURS. What the watt?? Every once in a while I stumble on a non-fishing item that we could all use. This bulb puts out up to 60-Watts of soft white light and functions just like a standard bulb using a wall or lighting fixture, but its rechargeable internal battery stays charged and ready to provide your home with up to 12-hours of emergency lighting during outages. 4 different light/brightness modes. Comes with a POWERCAP that allows the light to be removed from the fixture and used as a portable handheld or hanging light. Great for playing cards or tying flies. LED lighting stays cool to the touch.