Casio G-Shock GWN-Q1000 GULFMASTER White Quad Sensor GWN-Q1000-7A | eBay
CASIO G-SHOCK - The GULFMASTER GWN-Q1000, a seagoing concept model equipped with quad sensors developed in pursuit of the toughness required when carrying out missions at sea. | Facebook
Don't see many of these anymore! GWN-Q1000 : r/gshock