NEW IN THE OFFER - LED BULB EMERGENCY E27 10WEmergency light, if the power goes out or you need light anywhere. The bulb has a built-in battery, which allows you to work without electricity for up to 3 hours. The LED bulb works like a standard 230V LED bulb, thus charging the battery, which is integrated in the bulb. This allows it to glow for up to 3 hours after a power failure. ...