Seiko Cal. 5630 - 424

This Spring Drive model from 1980 features a 41mm Hardlex-Coated Steel case. With its 22mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-9eac71cb88b2]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1980

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