Seiko Cal. 6691 - 693

This Automatic model from 1977 features a 45mm Titanium case. With its 22mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-82c35a495ec8]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1977

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