Power Bank Function: . Input Port: Use the USB cable to charge your flashlight when the battery is low. An indicator light lets you know when the battery is fully charged. Super Bright & 5 Modes: High/Low/Strobe, Telescopic Zoom, Powerful flashlight using XHP50 LED bulb, maximum output 10,000 lumens, the longest lighting distance can reach 200m. Flashlight Features: Hidden micro USB input, low battery reminder and charging indicator. Micro USB is suitable for cars, computers, power banks, USB charging sockets, and can be used as a power bank for other electronic devices. Daily Waterproof: Made of aviation-grade aluminum alloy, it is shockproof, wear-resistant and waterproof. It can be used in rainy days, but can not be put into water. Suitable for dog walking, camping, fishing, hunting, mountaineering and other outdoor activities. Top Sellers