3 lighting modes: The LED work light has 3 lighting modes (high brightness, low brightness and SOS flash) to meet your different lighting needs. Open the switch cover, turn on the switch and the work light will start. to work immediately. High brightness can be used on rainy and foggy days, and low brightness is generally used. If you need help from other people, turn on the SOS flash. High Brightness/Energy Saving: 30W portable work light, at least 2000 lumens, can achieve the same illumination equivalent to 200W halogen bulb and save 80% electricity bill. It takes 5 hours to fully charge and can be used for 8 hours in low light mode. The service life is about 100,000 hours. USB output port and micro USB charging: USB output port and micro USB charging. The work light builds in 2 x 18650 rechargeable batteries, you can use micro USB charging without removing the batteries. In case of emergency, 4 AA batteries (not included) can be used. With USB output port, it can be used as a