Fairly bright. Helps me to be seen in the field, when working with machinery, especially in mines and beyond. I took it apart exposing the plastic and also swapped out some of the LED connectors to make my own flash. Very happy with it. Maybe I can get another one for the back of the truck if I can't get the little turn signals. I hit 85 mph and it didn't roll off the roof of the truck. Addendum: Do not buy. The yellow LEDs did not last until September 22nd. Half of the lightbar stops working. Will spend money elsewhere for a better product that actually lasts in this range. I stayed about 3 months.
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