Seiko Cal. 6131 - 498

The Seiko 6131-498 represents an important milestone in Seiko's 1976 lineup. With its 19mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-ba7f2a7c4865]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1976

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