So why would anyone be looking for a cheap dive watch? First thing I have to wonder about is whether they have a death wish. I hope what they really mean is they want a watch that meets the demands of scuba diving, yet doesnt break the bank.
The word cheap brings to mind characteristics of not just inexpensive, but low, or questionable quality of a throw-away nature. In other words, when it breaks after awhile, Ill just pitch it and get another.
I can actually understand someone saying they wanted a cheap watch if the intended use was other than diving. If it stops working the only thing you lose is knowledge of the time, which is no big deal.
But if your dive watch stops working while youre at 110 feet of depth, and you dont notice right away, it could kill you. That may sound far-fetched, but if you were depending on it as your primary timing device (i.e. diving without a computer or backup timer), you have at a minimum, lost the means for accurately knowing your no-decompression limits.
If you ended up unknowingly exceeding those limits and then surfaced, its very likely you would suffer some degree of decompression Illness (DCI), otherwise known...