Seiko Cal. 5637 - 640

This Hand-Winding model from 1992 features a 35mm Stainless Steel case. With its 22mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-9326951f6662]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1992

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