Highly Visible: Intense coloured light can be seen up to 5 km in darkness. Flashes over 200 hours on one battery. Multi-Functional: 3 output modes in one light flashing SOS signal flashlight Ideal for multiple applications Very Durable: Lifetime bulb (up to 100,000 hours) Operates from -40 to +50 Celcius; waterproof to 100 meters Specifications BATTERY SOURCE OPTIONAL BATTERY HOUSING COLORS AVAILABLE HOUSING MATERIAL HOUSING FINISH DOME LENS OPERATING TEMPERATURE STORAGE TEMPERATURE ENVIRONMENTAL SEAL WATERPROOF RATING VISIBILITY RANGE SWITCH RING ROTATION One (1) Lithium 3Vdc (Type: 123A) 1.5V AA with Adaptor Cap (P/N: 99013) Black or Tan (add -TAN to Product #) High-Tech Polymer Matte High Impact Polycarbonate, Clear -20 to +65AdegC -40 to +80AdegC Fully Encapsulated Unit 330Ft (100 Meters) 20 Miles (32km) IR, on a clear dark night Clockwise & Counterclockwise