TO CHECK THE STATUS OF THE INTERNAL BATTERY
Press and release the button. If the battery is fully charged then all four LEDs will illuminate.
TO TURN ON THE LIGHT
Press and hold the button. After a few seconds the light should turn on.
After the light is on:
1. Pressing the button will cause the light to strobe.
2. Pressing the button a second time will cause the light to flash an S-O-S signal.
3. Pressing the button a third time will turn off the light.