as always, i love G-Shocks & Casio just put out the Master of G Series which are designed for divers - but i'd still cop one, lol. they're both from the Riseman & Gulfman G-Shock series, just in the tones of the ocean & of the sky. joints are rust proof & waterproof/resistant of course. they're always evolving with this watch & i think thats one of the reasons why i like them so much.
*Ace