Never get caught in the dark! Make your home power-cut proof with this incredible bulb torch from NEBO. It functions just like a regular E27 LED bulb, but is fitted with a rechargeable battery so once you screw it into your lamp or lamp holder and switch the on the light, it will start charging, then if there is a power cut, unscrew the bulb, add the power cap, and you have a useable lightbulb or torch for up to 12 hours. The power cap has a hanging hook so you can hang it where you need light, and is fitted with a button to adjust the brightness • Mains (850 lumens): 24 meters (When screwed in to lamp or lamp holder) • Backup High (500 lumens): 2 hours / 18 meters • Backup Medium (185 lumens): 6 hours / 9 meters • Backup Low (80 lumens): 12 hours / 6 meters Going away for the weekend and need a torch? Just unscrew the bulb and take it with you, no need to mess about sorting out torches and batteries, or finding the charging cables to recharge torches before you go, this one will always be fully charged and ready to go, as well as being a regular household bulb, the energy efficient LED bulb uses just 8 watts, making it a good bright replacement for a 60W incandescent bulb. Non-dimmable (via household dimmer switch)Suitable for Damp locations (not waterproof)Not suitable for enclosed luminaires220-240V, 50/60Hz, 8WLithium Ion Battery 2000mAh3.7V , 7.4WhE27 screw fitting, plug into socket to chargeUse with power cap button to operate as a torch