Lifebuoy Self-igniting Light/Dry Battery Model:QD2S2G-2 Spec.:¡é112¡Á357mm Standard: MSC.46(66)¡¢MSC.48(66)¡¢MSC.81(70)¡¢MSC.226(82)¡¢MSC.323(89) Luminous Intensity ¡Ý 2cd Angle All Directions of the Upper Hemisphere Time of Power Supply ¡Ý2h Working Time50¡«70 Beats/min Light color :White Bulb:LED Period of vality:3 years China Classiflcation Society(CCS)certiflcate