Power Off, Light On - JackonLux rechargeable led bulb works as regular led bulb, when there is a power outage, our bulb still on, will light for up to 3-4 hours, you will never be left in dark again.Multi-Function, Not Only Bulb - JackonLux emergency light bulb is portable, widely used as camping light, flashlight, hook light, warehouse light, etc.High Brightness - JackonLux emergency light bulb has 800 lumens output under 120 volt AC mode, 60W equivalent, gives 500 lumens output under battery discharge DC model, 40W equivalent.Patent Design - plastic coated aluminum lamp body with glue sealed globe cover, impact-resistant, free of electric shock and moisture proof.What You Get - 2 JackonLux rechargeable led bulbs and 2 caps with switch and hook. Please drag to the bottom of the page to view the detailed product image and text introduction. If you got any problems while using this battery operated light bulb, please contact us via Amazon and we are available 24 hours online for you.