Lifejacket light is a kind of lifesaving outfit equipped on the lifejacket. It is appropriate for persons who fall into the sea at night to give out light signal to the lifesaver so as to be saved. Luminous intensity ≥075cd Time of Power ≥8h Battery Used CP502440 Operation Voltage 3.6V Battery Volume 1.6Ah LED 3.0V 0.01A Adaptive Environment Temperature -30℃~+65℃ Adaptive Water Temperature -1℃~3℃ Lighting Form Flashing Flash Frequency 50-70times/min Color of Light White Validity of Battery 5years