The NightFrighter LED from Streamlight is an advanced tactical flashlight with the very unique adjustable polymer grip ring. The polymer grip ring comes with an lanyard attachment which is adjustable on both ends to fit comfortably onto your wrist or fit snug onto surrounding objects. Utilizing Streamlight's own C4 LED technology and running on powerful, reliable CR123A batteries - this light is one of the most advanced offered by Streamlight with the versatility to match.