Power mode: USB socket charging, charging 1~2 hours, power supply 1.5~2 hours. Noun explanation: The so-called charging lamp holder means charging 1-2 hours at a time, then power off, unplug the USB cable, turn on the switch to turn on the light, generally can be used for 1.5-5 hours.The so-called plug-in lamp holder, that is, after receiving the goods, directly plug in the household electric power through the USB cable, the switch can be turned on, and the light can be turned on as long as the power is turned on. If you need to light up for a long time, it is recommended to purchase a plug-in lamp holder.