Ruggedized 4mw laser diode to withstand recoil. Windage and elevation screws for fine adjustment. Internal programmable micro-processor for flashing, stealth target or steady modes with 3 levels of brightness operated by pressing Hogue logo and pressure pad activation buttons. Battery change without laser sight readjustment. Hogue?s famed orthopedic hand-shape with proportioned finger grooves position the hand naturally. Cobblestone texture provides an efficient, non-slip, non-irritating stippling pattern. Ambidextrous safety design. No modifications to firearm are necessary. Laser output: 630-670 nm.