Width: 1.0cm Switch mode: fast flash, slow flash, long light, close USB charging: can be used repeatedly. Charging instructions: Do not directly charge with high-voltage mobile phones, if directly charged, it is easy to damage the power supply. The correct method is to use the computer's USB low voltage to charge it, plug it into the computer, before charging, the power supply must have electricity, you can keep the power supply active, and the service life can be extended.