Seiko Cal. 4425 - 520

Seiko 4425-520

This Hand-Winding model from 1981 features a 45mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-7e2bcb340c09]

Also known as: Monster, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
11.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1981

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