Only one way to go. G-Shock, digital display that is easy to read at a glance and they hold up well in salt water which is something to seriously consider as going through selection you spend a lot of time in the surf and you don't get time to rinse it with clean water. Light at the push of a button, can display mil time and they are bomb proof. In all honesty though a watch is not needed during the initial BUDS phase as time becomes irrelevant once you step onto the grinder.