Extremely Bright: The flashlight uses high efficiency Cree L2 LED chip, with good PCB design and aluminum galvanization, maximum 600 lumens. The light beam can be projected up to 200m. 3 adjustable modes: just turn this flashlight in or out of range to get a beacon or spotlight It only has 4 lighting modes (High / Low / Strobe / COB sidelight), which effectively reduces the difficulty of switching 5 modes. Everything for a better using experience USB Rechargeable Flashlight: The USB LED flashlight is equipped with a 18650 rechargeable battery. It can be used with a USB cable or with a power bank. power from laptop, car charger, power bank, etc. Adjustable zoom and focus: USB flashlights adjust the diameter of the light upwards and adjust by turning counter-clockwise. As you adjust, the light will either be smaller and stronger, or larger or less focused, but will illuminate in a larger area. Waterproof and Portable: IPX4 waterproof and designed for use in heavy rain. And without the USB port cap, it can also be waterproof. Its durable aluminum body and smart shape design, easy to wear every day. Perfect for camping, hiking, fishing, running, dog trekking, power outages, emergencies, targeted research and general home use.