Seiko Cal. 5231 - 597

The Seiko 5231-597 represents an important milestone in Seiko's 1981 lineup. Powered by the 5231 caliber with 25j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-3edd543683b6]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1981

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