Here is a deep water diving light from Nitecore with their DL10 flashlight. Water Proof to 98 feet. Come with a nice pointer rod to assisting in moving objects or help you fight away a fish etc. This has 1000 lumens so for under water should provide a nice light output also the red LED will help preserve you night vision under water. This is a solid light, and will suit anyone who a diver will be a valued tool. You can click link below to get this if you are interested in it from FastTech.com:
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