Casio sells few digital compasses/watches for $50-$70. Does anyone use them as underwater compass for scuba diving? SUUNTO sells digital compasses for over $270…Does Casio work for scuba?

The Pathfinder series watches that are water-resistant to 100M or deeper can be used for diving. Casio does have diving models with a built in depth gauge. The other models with the digital compass can be used for diving.

The websites listed below will provide you this information.