The Streamlight 88066 tactical weapon light delivers 1000 lumens with a 447 meter beam for long range visibility. It offers High, Low, and Strobe modes with TEN-TAP programming to select preferred operation. The light runs on two CR123A batteries or one SL-B26 protected Li-Ion battery pack. It mounts to long guns equipped with MIL-STD 1913 rails and is built with durable, impact resistant construction for tactical and professional use. The extended runtime on Low mode makes it suitable for training, patrol, and field operations.