Seiko Cal. 4537 - 659

This Hand-Winding model from 1988 features a 46mm Titanium case. With its 18mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-356b8ca5ffa9]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1988

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