Seiko Cal. 4421 - 510

Seiko 4421-510

This Automatic model from 1971 features a 41mm Titanium case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-e8f6ae89e24a]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
41mm
Case Thickness
11.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
160m
Dial Color
Black
Jewels
33j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1971

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