I have dived many times with this flashlight in test areas - also in caves and under ice. It's easy to use underwater, reliable (so far) and offers excellent flood cover. This light is an excellent primary light source for short dives and a good backup when set at less than full power (although a 2 hour burn at full power is pretty good). I use it with a Go Pro and given the field of view of this camera I would recommend buying two Sola lights (my second is already on order) to avoid false vignetting. The only thing I wish the descriptions were a little clearer and more emphatic is that there are no mounting hardware included with this particular SKU.
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