USB Rechargeable Our LED flashlight use USB rechargeable charging with 18650 battery inside. It can be charged directly with our standed USB cable, power supply from laptop, car charger, power bank, etc. And it has low power warning function, flashing red light when the battery is low.Adjustable focus: The flashlight adjusts the diameter of the light with the top and adjusts it by turning it clockwise or counterclockwise. As you adjust, the light either gets smaller and more focused, or bigger and less focused, but it is lit in a larger area.Super bright: The portable flashlight has 600 lumens Cree LED, it will provide a very bright wide circle around the area in front of your feet for walking in dark places and can zoom in to illuminate objects approximately 60+ feet away. Features High / Low / Strobe / SOS modes.Advanced design: These flashlights use IPX4 waterproof design for almost all conditions from heavy rain to dry and dusty environments. Skidproof designed with durable aluminum body and fabric strength endures rough handling. Weight light and easy to grasp.Multiple function: The flashlight is used for camping, hiking, fishing, running, dog walking, power outages, emergencies, targeted searching, and general household use.