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