Acebeam X75 Micro-arc oxidation XHP70.3 version with 67,000 Lumens is more resistant to wear and corrosion than hard anodizing; Using a boost circuit provides 20,000 lumens for 30 min or 10000 for 60 min. It's also the best Waterproof Flashlight with an easily replaceable fan unit. Equipped with PD60~100W charging/discharging and Power bank function, it is also your portable charging station for outdoor emergencies!