Seiko Cal. 6131 - 765

The Seiko 6131-765 represents an important milestone in Seiko's 1988 lineup. With its 19mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-f3b668f4f16c]

Also known as: Sumo, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1988

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