Seiko Cal. 5231 - 590

The Seiko 5231-590 represents an important milestone in Seiko's 1992 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-d5d62123792d]

Also known as: Sumo, Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1992

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