Seiko Cal. 6231 - 440

This Automatic model from 1986 features a 39mm Gold-Plated case. Powered by the 6231 caliber with 21j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-87e8d394b6c7]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1986

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