Frequently Asked Questions
Citizen Promaster is built as a proper professional sports watch collection, not just a rugged-looking style. Citizen positions Promaster as an authentic sports watch range for people who push limits across the sea, land and sky. The collection has been around since 1989 and includes dive watches, field watches and pilot-style watches made for the relevant environments.
It depends on how you plan to wear it. Choose a Promaster Marine if you want a serious dive-style watch with strong water resistance and underwater legibility. Choose a Promaster Land if you want a tough outdoor or adventure watch with practical functions for the field. Choose a Promaster Sky if you like aviation-inspired design, world time features and a more technical pilot-watch feel.
Yes, many Citizen Promaster Marine models are made for genuine dive use, not just everyday water resistance. Citizen’s global Promaster Marine range includes ISO diver models, professional diver watches and saturation-diving models, including watches with 300m and even 1,000m water resistance in selected models. Always check the exact model specifications before diving, but Promaster has a long-standing reputation in serious diver’s watches.
ISO 6425 is the international standard for diver’s watches. It sets the requirements and test methods a watch must meet to be considered suitable for diving, including water resistance, legibility in the dark and a secure way to measure dive time. The current standard is ISO 6425:2018. In simple terms, an ISO 6425 diver’s watch is not just “water resistant.” It must be designed to withstand diving in water to at least 100 metres and include a secured timing system, such as a unidirectional bezel, that can be read in darkness. For divers and water sports enthusiasts,the ISO 6425 is a useful trust marker. It means the watch has been built and tested to a recognised dive-watch standard, rather than simply styled to look like a diver’s watch.
When choosing a diver’s watch, look for proper water resistance, ideally 200m or more if you plan to dive, along with a unidirectional rotating bezel to help track time safely underwater. Clear legibility is essential, so choose a watch with bold hands, strong contrast and good lume on the markers, hands and bezel point. A screw-down crown, durable case material and scratch-resistant crystal will help protect the watch in wet or rugged conditions. Comfort also matters, whether you prefer a rubber strap for the water or a bracelet for everyday wear. The best diver’s watch should feel tough, easy to read and practical in the water, while still looking good enough to wear every day.