Seiko Cal. 6231 - 440

The Seiko 6231-440 represents an important milestone in Seiko's 1981 lineup. Powered by the 6231 caliber with 23j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-2153d6e56025]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1981

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