Instructions: INT(automatic model)---turn to INT model and press the pink button,the laser will last 10 seconds and then power off automatically; CON(continuous model)---turn to CON model and press the pink button, the laser will last about 35-40 minutes, then the voltage will decrease,laser will also become weak, close it for 1 hour, all will be normal again, but we suggest that don't use CON model except adjusting the angle.
