Seiko Cal. 4537 - 661

This Hand-Winding model from 1980 features a 40mm Hardlex-Coated Steel case. With its 20mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-be07c6b06a08]

Also known as: Samurai, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1980

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