Light Features: A necessity and safe tool during blackout, Can work during power outage for 2-3 hours, not only for daily use, but also for emergency like blackout, power failure, storm, hurricane ect. Perfect replacement for candles and emergency flashlights, lanterns. A19 size that most popular choices for light fixtures, other emergency light bulbs on the market are often large in size that may can'fit in your light fixture, this one smaller size led bulb is a more secure choice. 60 watt equivalent 5000K Daylight Light Bulb with no yellow or hues added. A great all around color that can be used anywhere. E26 base, also applies for E27 base, Just easily screw it to the right lamp and get your home lighted. With hooks for you to move it around or camping Specification Size:E27 Voltage: 85-265 V Power Output: 12W, 60 watt equivalent Lumens:750-800lm Color temperature: 5000K Daylight Applicable lamp base: E26(Also applies to E27) Pack Included:4Pcs A Must-have Tool for Power Outage : Emergency light bulbs will come in handy when the power goes out,these can keep you and your family out of the dark during storm, hurricane,etc. Long-lasting & Wide Application : This battery light bulb can self-charging during daily use,which will provide 4-6 hours lighting during power outage,an idea choice for outdoor activities home use Work like Regular Light Bulb : You can keep the bulb in the lamps,or pinch the threaded part of the bulb with your hand and press the bottom center point,or grab the cap hook and hang it wherever you want Practical&Safety:The rechargeable light bulb fits for most ceiling fixtures or lamps with the E27 screw-in base,you can turn the bulb on and off with your light switch,which is more safer than candles,lanterns,a good substitute for a flashlight