Usual grungy yellow g-shock now with a nearly dead battery. I've got to look up what it takes and how to change it without f-ing up the seals while I've got all my teeny tools out to fix my kid's Nintendo.
@bicyclebuck The Frogman does rotating bezel like functions without the rotating bezel. You can put it in dive mode where it shows your dive time on the main hands and the current time in the subdial at 8 o'clock. You can dive in (har) to the manual here.