Seiko Cal. 6637 - 971

This Kinetic model from 1974 features a 45mm Titanium case. With its 18mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-376a1424850e]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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