Streamlight 14510 Sidewinder Compact II Military Model Flashlight with 4 LEDs, CR123A Battery and Helmet Mount, Coyote High impact super tough nylon case offers exceptional durability and weather resistance Compound On-Off mode selector switch ergonomically separates On, Off, Dimming, Strobe, and LED selection functions 3 meter multiple orientation impact resistance tested IPX7 Rated design; waterproof to 1 meter for 30 minutes Includes helmet mount