Product Description:Runs on 1 x 18650 rechargable battery. 3.7v working rangeDurable aluminum reflector---Smooth ---Mirror likeThis is the IR Bulb professional equipment. Non-professionals， buy with caution!Peak Wave Length : 850nmSpecs��850nmvoltage range 3-7 voltsFeatures:High quality aluminum alloy for proper heat dispersionFeatures an LED with a precision smooth reflector that creates a smooth beamSpecial design， enhance light output for intension and distanceEffective and energy-saving， low heating， long service lifeConvenience to install Comes with installation instructions for all listed model typesCOMPATABILITY: NOTE: To use with all Surefire?， remove outer (large) spring from base of lampConfirmed fit for Surefire? 6P， 6Z， 9P， 9Z， Z2， Z3Confirmed fit for Surefire? G2， G3 with occasional modification requiredReported to fit: Surefire? C2， M2 SeriesModification for use with Surefire? M951 & 952Confirmed fit: Solarforce L2， L2M， L2P， L2TConfirmed fit: Lumaforce LF1， LF2 SeriesConfirmed fit: Pelican M6 SeriesConfirmed fit: Ultrafire and similar 501B， 502B， 503B， 504BReported to fit: G&P T6， T9， X6， M3， R12Reported to fit: Uniquefire L2Reported to fit: Ultrafire G60， G90， G120Reported to fit: SpiderFire L2 Series， G&P T-6， T-9， R12， ， Hugsby S3， M2， G2Package Includes: 1 x 850nm Infrared Bulb