The Rev 3 is also equipped with two beacon modes, one of which pulses every 3 seconds for up to 530 hours, the other every second for 170 hours. Meanwhile, a breakaway mode allows the user to quickly activate or deactivate the strobe and beacon features with a quarter turn of the head. And thanks to a glow-in-the-dark O-ring, the flashlight is easy to locate when it’s off.