(HYYD-B)life jacket light: lithium battery
luminous intensity: more than 0.75cd
time of power: more than 8h
operation voltage: 3.6v
adaptive environment : -30--+65degree centigate
adaptive water : -1--+30degree centigate
lighting form: Flashing
flash frequency: 50-70time/min
color of light: White
Weight(including battery): 150g