Extremely bright: The flashlight uses a high-efficiency Cree L2 LED chip with a beautiful PCB design and a zinc-plated aluminum plate with a maximum of 600 lumens . The light beam can be projected up to 200m. 3 modes adjustable. Simply turn this LED flashlight inward or outward for a beacon or spotlight. It only has 3 lighting modes (Bright, Strobe, COB), 3 modes can be switched by buttons, the switching order is as shown in the figure. Adjustable zoom and focus: With USB flashlights, the diameter of the light is adjusted from the top and by turning clockwise or counterclockwise. As you adjust, the light will either get smaller and more focused, or bigger and less focused, but it will illuminate a wider area. Waterproof and wearable: Waterproof to the IPX5 standard and designed for use in heavy rain. Even without the USB port cover, it can also be waterproof. Its durable aluminum body and elegant shape make it easy to carry every day. Perfect for camping, hiking, fishing, running, walking the dog, power outages, emergencies, targeted research, and general home use. USB Rechargeable Flashlight: The Extreme Bright LED Flashlight is equipped with a rechargeable and can be used with a USB cable or with a power adapter from a laptop, car charger, laptop, power bank, etc.