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Citizen Promaster Mechanical Diver Fujitsubo

Citizen · Promaster

Citizen Promaster Mechanical Diver Fujitsubo

Citizen Promaster Mechanical Diver Fujitsubo (reference NB6021-17E) — specifications, measurements, watch images and standardized wrist-fit previews for informed comparison.

A lightweight 41 mm Super Titanium mechanical diver with calibre 9051, 42 hours of reserve and ISO-rated 200 m water resistance.

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Best forTool / Diver
Not ideal forSpecifications requiring final verification

At a glance

ReferenceNB6021-17E
CollectionPromaster
Model linePromaster
Production statusCurrent
Production period2022–present
Official size41 mm
Watch technology InfoMechanical
DisplayAnalog
Movement InfoAutomatic
Calibre / operating system Info9051
Key features InfoDate, Dive bezel
Complication InfoDate
Illumination InfoYes
Case diameter Info41 mm
Thickness Info12.3 mm
Lug-to-lug Info48.5 mm
Power reserve / runtime42 hours
Water resistance200 m
OriginJapan
Recommended wrist Info14–21 cm
Price categoryAccessible

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Strengths and considerations

Strengths

  • Lightweight Super Titanium case; sapphire crystal; ISO-compliant 200 m dive rating; enhanced magnetic resistance.
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Manufacturer and technical references used to verify this watch specification.

Specifications last verified: 2026-08-14.

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