Ready, set, dive. The Citizen Promaster Aqualand ISO-compliant watch—featuring maximum depth memory, rapid ascent alarm, auto-start dive mode, and power reserve indicator for divers up to 200m—is an icon you won’t want to be without on your way to the ocean. The stainless steel case complements the ocean blue polyurethane strap and the blue dial with a blue and red bezel. Powered by our Eco-Drive technology—fueled by light, any light. Never needs a battery. Caliber number J250.