Seiko Cal. 5621 - 990

Seiko 5621-990

This Hand-Winding model from 1977 features a 39mm Hardlex-Coated Steel case. With its 21mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-e39d676e5867]

Also known as: Tuna, Navigator

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Cream
Jewels
29j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1977

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