1. Light source uses CREE LEDs with high efficiency & long lifetime 2. Aviation grade aluminum alloy casing, shock & impact resistant. 3. Vacuum electroplating aluminum reflector, the light coverage distance can reach more than 150 meters. 4. Battery with protection against over charge, over discharge and short circuit. 5. Waterproof IP68, corrosion proof WF2. 6. Portable or shoulder- carried