?Nuclear Power?: Large capacity battery, 8 courses 4 super bright bulbs formed LED flashlight that casts a wide beam that effortlessly illuminates anywhere you show, the beam can go up to 1640 feet (depends on environment). 4 light sources, 4 times brighter wider than normal design, rechargeable with USB cable. ?Multi functional?: Shock resistant, tough enough to withstand accidental drops to temporary submersion. You can rely on this light during power outages, roadside repairs, outdoor activities, hiking any type of emergency. ?Misty Feature: 4 x 1000 lumens upgrades an upgraded durable ultra-bright bulb, each bulb contains 2 cores, it has 8 cores in flashlight in total, which can generate huge power to make the darkness disappear. It can maintain up to 5 hours of battery life when running at full charge. ?Note?: Battery is inserted in flashlight. So you don't need to prepare an extra battery. To ensure transportation safety, flashlight may be out of power when you arrive, please charge it yourself when received. Please don't put flashlight completely into it. ?Special design?: The rechargeable LED lamp beads are evenly distributed on the side of the spotlights. It was designed not to hurt your eyes when you need close observation while working, reading, repairing things. It has 4 setting modes, high light, low light, projection strobe flash.