Seiko Cal. 4451 - 231

This Hand-Winding model from 1977 features a 45mm Titanium case. With its 18mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-a6f8533f8e6b]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

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