Citizen's Promaster collections are the world's leading speciality watches, providing superior functionality in a variety of fields. The Eco-Drive Aqualand BN2021-03E, from the Citizen Promaster Sea Collection, is designed and engineered for marine experts; tailored, reliable equipment for total confidence. This cutting-edge watch meets ISO 6425 dive regulations and also features depth and pressure measurement, maximum depth memory, rapid ascent alarm and an automatic water sensor. The stainless steel, textured bezel with strong contrasting markings, is a one-way bezel for fail-safe accuracy at a glance, while visually complementing the watch face for a stylish look.