Seiko Cal. 4540 - 637

This Hand-Winding model from 1975 features a 43mm Gold-Plated case. With its 20mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-3f3717681ea5]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1975

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