LED flashing double row shoulder light

. Item No. : LED flashing double row shoulder light
. Size: 8*3cm
. The shell design maintains transparency, good visibility, brightness, and good flicker effect.
. How to use:
Starting: long press for 3 seconds, the upper row of lights flashes
Press again: the lower row of lights flashes
Press again: double rows of lights flashes
Press again: the red and blue lights are off, stop flashing, lighting works.