FUNCTION-LED WARNING LIGHT:
1.
The LED warning light is always locate on the back of head.
2.
To press down it once, it will be light up on red color.
3.
To press down it twice, it will be flicker on red color.
4.
To press down it once more, it will be turn off.
5.
It's easy to be attached or take off.
FUNCTION-SOS WHISTLE + HOOK:
1.
Use the hook to hang the lamp anywhere.
2.
Blow the SOS Whistle to get help if any emergency.
(EN)