I don't know. Us old guys always wore our light around our neck. That way you can see in front of you for walking, changing plugs. etc. BTW, I have used a walMart dive light for about 10 years. $8, waterproof, 4 AA batteries and plenty of light. I know the big thing now is red lights but we never have had a problem with a regular light. Of course, you shouldn't ever, ever shine your light on the water. Turn around when you change plugs or eels etc.
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