Essential Gear - The Guardian Wearable Red LED Signal Light and High-Tech Survival Tool with Black Composition Construction. Model: EG54001. Measures 1 1/2 x 1". Dual function - steady-on and flashing. Tough, high impact black composition construction. Adaptable base easily clips to belt or pocket for hands free illumination. Omni-directional light. Waterproof up to 300 ft. Uses two CR2032 lithium coin cell batteries (included). Battery life up to 250 hours in flashing mode and up to 100 hours in steady mode. Hang packaged."