Delta Force CS-20 LED Flashlight Single CR123 is water resistant and impact resistant. Features High, Low, Strobe, and Momentary ON functions. Features memory retention; remembers your last setting. Great for your pocket or a backpack carry. Light features a CREE XBH LED. Constructed from anodized aerospace aluminum. Has ON/OFF switch and dual function spring steel clip which allows for clipping to pocket, belt or the bill of a hat. Crenulated head for self defense.