Seiko Cal. 4420 - 538

Seiko 4420-538

This Hand-Winding model from 1977 features a 35mm Two-Tone case. With its 18mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-a5f6a0c06396]

Also known as: Sportsmatic, Navigator

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
35mm
Case Thickness
10.8mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
150m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1977

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seikata-wm-a5f6a0c06396