I use Guardian LED lights made by Adventure Lights. I own the red and the white, they are pretty nice. You turn the batteries around in the casing and it goes from steady ON to blinking.


http://www.adventurelights.com/industrial/products.asp?sid=4&cid=33&ccid=75&S=0&O=5

The red one was intended to be used as a beacon, attached to my SAR pack.



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"The only easy day was yesterday."