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In 1983, a mechanical Citizen diver’s watch was found at the bottom of the sea at Long Reef Beach in Australia. While the entire case of the timepiece was covered in barnacles from spending several years submerged, the watch itself was still running properly and remained completely water-tight. Citizen has reimagined that legendary vintage model with modern materials and movement technologies as the Promaster Dive Automatic “Fujitsubo” (meaning “barnacle” in Japanese), which celebrates the timepiece that forever stands as a testament to Citizen’s world-class capabilities as a dive watch manufacturer.

The case of the Citizen Promaster Dive Automatic measures 41mm in diameter by 12.3mm thick, and it is crafted from the brand’s lightweight Super Titanium alloy that features a highly scratch-resistant Duratect coating. Fitted to the top of the case is a chamfered sapphire crystal, which is surrounded by a unidirectional rotating bezel with an elapsed time insert. A Promaster signed screw-down winding crown located at 3 o’clock combined with a solid titanium caseback helps provide the Citizen Fujitsubo diver with an ISO-certified 200 meters of water resistance.

Available with a blue dial and bezel as the NB6021-68L or in classic black as the NB6021-17E, both versions of the Citizen Promaster diver offer an identical overall dial layout with a date window at the 3 o’clock location, along with highly luminous hands and hour markers for excellent low-light visibility. Additionally, while the blue NB6021-68L is fitted with a three-link bracelet made from Super Titanium, the black NB6021-17E receives a matching black textured rubber strap completed by a Super Titanium pin buckle.

Powering the Citizen Promaster Dive watches is the brand’s in-house Caliber 9051 automatic movement. Based upon the reliable Cal. 9xxx series platform from Citizen-owned movement manufacturer Miyota, and running at a frequency of 28,800vph with a power reserve of approximately 42 hours, the Citizen Cal. 9051 also includes antimagnetic materials for its balance spring and surrounding components, which enable the titanium Promaster diver to be magnetic resistant up to 16,000 A/m.