Citizen Eco-Drive Promaster Diver BN0191-55L vs Citizen Eco-Drive Military Field Watch

Buy the Promaster Diver if you actually dive, swim often, or want a large, bright dive watch with an ISO-rated 200m case and a rotating bezel. Buy the Military Eco-Drive if you want a light, slim everyday field watch that disappears on the wrist. The Promaster is the more substantial watch: 45mm steel case, aluminum bezel, 200m rating, and owners report accurate timekeeping and strong lume. The Military is smaller and lighter, with a nylon strap, day and date, and 100m resistance, but it is a field watch, not a dive tool.

• Choose the Promaster Diver if you need a true dive watch with 200m water resistance, a one-way timing bezel and a steel bracelet.
• Choose the Military Eco-Drive if you want a light, compact field watch with day and date for daily wear.