For many domestic residents, due to the aging of the line, power failure often occurs in the maintenance of the circuit, causing a lot of inconvenience to their daily life. Recently, a foreign company invented a kind of LED bulb that is not afraid of power failure. The 3-hour ultra long standby is really great.
Recently, litonics, Wales, has invented a light bulb called iviti on. In case of power failure, it only needs one battery to maintain the light, so that you can see the surrounding environment. When there is electricity, the battery is charged, and the bulb lights normally. Switch to battery mode automatically in case of power failure.