Under the right according to the two-display the date
Left click on the display light and strong light time(maximum 2 -3.5hours)
Under the left key press two-show weak light and weak light time(maximum 9 hours)
Left by the three--shut off the power
Key about long press shows SOS distress signal at the same time
Right-click adjustable time date long right click right click on time flash adjustment, adjust the next, then right click to flashing adjustment and so on.
