... ROTATE, double blink, single blink, alternative, SOS (Morse code) for rescue, solid-on (high), solid-on (low), 2LED ... 1/2 mile away*Contains a strong magnet for placement on vehicle*Can also be placed safely ... over it!*Completely waterproof! It even floats! Perfect for boats and watercraft safety, also it is no ... 1/2 mile.*Standard red LED is perfect for clear weather. In foggy conditions the yellow and ...