USB rechargeable: 18650 battery and USB cable are included in the package. When the flashlight is charging, the switch button is red, and when the charging is complete, the switch button is green. 4 lighting modes: Our LED flashlight is 600 lumens, with 4 lighting modes (high, low, strobe and SOS), which is convenient for our daily use, and the brightness is enough to be used as a special flashlight or emergency use (Note: Strobe After the mode, you need to press and hold for three seconds, and then switch to the fourth mode-SOS). Durable metal clip: The compact clip looks stronger and prevents the flashlight from rolling too far on a flat surface, so the flashlight can be placed in a pocket and is ready at any time. Small and portable: Its compact design and balanced weight/size ratio make it an ideal product for everyone. It is so small that it can be taken almost anywhere and meet your different lighting needs. Various uses: IPX4 waterproof, our led flashlight can work in rainy days, very suitable for camping, hiking, fishing, running, walking, power outage, emergency, targeted research and general household use. (Note: Cannot be immersed in water)