TruGlo stands behind their trademark mantra "When Brightness Counts" with the revamped, dual-colored superconducting MicroTAC™ laser diode. Versatile and robust, users can choose between a constant or pulsing beam in red or green hues. This item is convenient for right or left-handed users with a recessed, push-button switch. To save battery-life and increase efficiency, TruGlo includes a five-second auto shut-off feature. Don't be fooled by MicroTAC™'s lightweight construction--this compact accessory is made to withstand extremes in temperature, ranging from 14-122F (-10-50C). Mount this device on your standard Picatinny and Weaver rails.