Seiko Cal. 5637 - 326

This Hand-Winding model from 1977 features a 41mm Titanium case. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-de2792cf97c1]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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