Seiko Cal. 5635 - 637

Seiko 5635-637

This Solar model from 1981 features a 40mm Hardlex-Coated Steel case. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-60730084c7e3]

Also known as: Bellmatic, Navigator

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
9.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Silver
Jewels
35j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1981

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seikata-wm-60730084c7e3