CALI68
Contributor
I am set on buying a Halcyon Helios Light but I am torn between the options. I'm leaning towards The 4.5 with the 10W head. I like the 10W head because of it's adjustability and compact size but then again the idea of having an 18W head is pretty cool. The aplication will be for open water diving on singles. I dive in Monterey so often times a sunny topside still means a near night dive in terms of Vis. In your opinions is the 18W overkill or a good idea. Does the 4.5 last long enough or should I get the Helios 9? Is there a set DIR rule for the choice in light head/cannister size?