Where there is a difference a big difference is in the weight. While I prefer the look of the Seiko the
link comfort and effortless presence of the Challenge Diver are not to be overlooked. On wrist they are very
link different watches. If you don't typically like dive watches due to their
link heft or you're looking for a very lightweight experience that doesn't exhibit any of the normal weight transfer of a steel dive watch the Citizen Promaster Mechanical Diver 200m has a lot to offer.