Just curious since there is often discussion about whether this watch or that is a "tool" watch and it often involves a watch with a mechanical movement (high-end divers, for instance). Is there a situation when a mechanical movement is really more practical as a tool? Seems like the few (not having to replace the battery?) are far outweighed by the many (cost, durability, accuracy). A $20 Casio seems like the ultimate basic "tool" watch.