Seiko Cal. 7137 - 305

This Spring Drive model from 1990 features a 35mm Titanium case. With its 18mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-faa118762ed3]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1990

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