Model:JSL Spec:¦µ38¡Á48¡Á70mm Standard:SOLAS74/96,MSC.81(70) Flashing frequency:50~70times/min Rated paramenter of Battery:CR17335¡Á2 Rated paramenter of Bulb:3.6v,0.3A Period of Validity:five years Luminous Intensity:¡Ý0.75cd Time of power Supply:¡Ý8h European Economic Community(EC) certificate.