ctkcom rechargeable emergency led bulb 7w (4 pack)-household lighting bulbs ,saving energy intelligent light rechargable electricity 65w equivalent 6000k white bulb 120 volt e26/e27 ctkcom ctkcom led intelligent emergency light (power failure or manual control).<br> advantages: replace current household light bulb with the intello light bulb.emergency lighting, automatic power outage, the power of your home light, normal lighting.<br> function: ctkcom emergency led light bulbs adopts identifying circuit, in high-voltage lighting it will recharge itself and be with overcharge protection. once there is power failure, it will immediately start dc lighting (lighting control switch can also control dc lighting and high-voltage lighting on or off in order to achieve you desire). <br> about 4-6 hours of continuous illumination. with accurate protection function, comprehensive use of electronic contactless control, low power consumption, effectively improve the service life.when you put them on the water,the light also will on. <br> suitable for hotel, dining room, guest room, office, show room, shop, corridor,go camping etc.<br> dimension:4.72in*2.75in<br> the input voltage: 85-265v/ac<br> conversion time: 1s<br> charging time: 5-10hours<br> emergency time: 4-6hours<br> the charging method: mains lighting when charging.<br> to use as a glass light,add 3mm of water in a glass.place the intello light bulb silver contact into the 3mm of water and enjoy the benefits of having light a glass.<br> packing include:4 x led bulbs