Model:PH2703B Spec:¦µ38¡Á131mm Standard:SOLAS74/96,MSC.81(70) Flashing frequency:50~70times/min Rated paramenter of Battery:4.5v 3Ah Rated paramenter of Bulb:3.6v,0.4A Period of Validity:3Äê three years Luminous Intensity:¡Ý0.75cd Time of power Supply:¡Ý8h China classification society "CCS" certificate