【ADVANCED MATERIAL】- YIFENG tactical flahslights have employed premium 6061T aerial aluminum alloy which is compact, virtually indestructible, durable, IPX 6 waterproof. – With its wide-to-narrow beam and 5 lighting modes (High-Low-Strobe-SOS), our flash light with smart one key button allows effortless one-hand operation and makes this pocket flashlight your best camping flashlight.