Weighing only 2.5kg, you'll hardly notice the difference in your Dive Bag.
The OP (original pretender?) should drop one these into their dive bag and tote it around for a while:
I didn't want to come on here to 'preach' about my product.. I was trying to open it up for a discussion to gain some valuable feed back.
The greatest error any marketer can make is trying to sell a product that solves a problem that their customer doesn't have.
If you're ever interested in conducting market research with divers (product development, positioning, messaging, pricing sensitivity, etc) feel free to PM me... I "found" a guy that does that sort of thing for the dive industry.