Extreme Brightness for maximum illumination and long-distance visibility. Zoomable Beam Adjustable focus from wide floodlight to narrow spotlight. USB Rechargeable Battery Built-in or replaceable lithium-ion battery with fast charging. Durable Tactical Design Aircraft-grade aluminum alloy body with anti-slip grip and waterproof rating. Multi-Mode Lighting High, medium, low, strobe, and SOS for various environments and emergencies.