Seiko Cal. 5637 - 250

This Solar model from 1974 features a 39mm Stainless Steel case. With its 22mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-f8529bf86463]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1974

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