Böker Applegate Fairbairn Combat II Folding 5 hours on High Custom 5 hours on High Custom TIR optic delivers a focused beam with balanced peripheral illumination Construction and Durability Machined from 6000 series aircraft aluminum for strength and longevity IPX7 waterproof rated for 1 meter up to 30 minutes Controls and Features Ambidextrous rear paddle switches with high and low options Supports momentary and constant on operation Programmable strobe mode for added versatility Safe off feature helps prevent accidental activation and conserve battery life Mounting System Rail grip clamp allows fast tool free attachment and removal Designed to install safely without placing hands in front of the muzzle Compatible with a wide range of full size and compact firearms Power and Included Items Multi fuel design accepts CR123A battery or SL B9 rechargeable battery pack Includes CR123A battery key kit and interchangeable high and low switches The TLR 7 X features multi fuel capability — powered by either one (1) CR123A or one (1) Streamlight SL B9 lithium ion rechargeable battery pack Made with soft Figerglass reinforced Delrin handle Integrated stainless steel weights rests solidly in your hand Brass cross guard The various versions of the Boker Applegate Fairbairn have been convincing special forces all over the world for years and have emerged as an icon among tactical knives Rex Applegate