But for the rest of us, we love looking for affordable alternatives to the iconic dive watch. The trade-off is a stealthy black resin case and 100m of water resistance instead. Now the MRW dive watch gets a subtle update. Casio updated its MRW diver with a new date display, bringing it closer in looks to the Rolex Submariner. Not much has changed from last time, but the brand has actually made a slight adjustment to get it closer to Rolex’s flagship dive watch.