Seiko Cal. 5231 - 372

Seiko 5231-372

The Seiko 5231-372 represents an important milestone in Seiko's 1992 lineup. Powered by the 5231 caliber with 30j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-818efaa9e72c]

Also known as: Helmet, UFO

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
90m
Dial Color
Navy
Jewels
30j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1992

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