Seiko Cal. 6131 - 185

The Seiko 6131-185 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-581b109d8c4a]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1974

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