Seiko Cal. 6131 - 737

This Spring Drive model from 1989 features a 39mm Hardlex-Coated Steel case. With its 19mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-a04ae99f716d]

Also known as: Monster, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1989

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