Brand: Citizen
Type: Wristwatch
Model Name: Promaster Sea (Left-hand)
Model Number: NY0040-50E
Lug Width (mm): 20
Case to Case (mm): 42 (diameter) × 12–13 (thickness)
Bezel Material: Stainless Steel, 60-click unidirectional
Case Material: Stainless Steel
Caseback Material: Solid Stainless Steel (Promaster emblem)
Movement: Automatic Miyota 8204, 21 jewels, hand-winding capable, approx. 42 h power reserve
Functions: Day-date display, hour, minute, seconds
Watch Details: Black glossy dial with luminous hands and markers, mineral crystal, screw-down crown at 8 o’clock, ISO-certified 200 m water resistance
Bracelet/Fob Material: Stainless Steel bracelet
Bracelet/Fob Style: Standard diver’s bracelet (folding clasp with diver’s extension)
Clasp Style: Deployment with push-button safety or diver extension
Total Length: Adjustable standard bracelet (approx. 7–8 inches)
Horologist Note: A rugged, ISO diving icon, the left-handed crown design enhances comfort and usability. Whether for diving or daily wear, this reliable tool watch blends heritage, affordability, and robust engineering—coveted by collectors and known for its long-lasting popularity.
Working Condition: Watch is running at time of evaluation without detailed testing; future state not guaranteed.