Seiko Cal. 3879 - 131

Seiko 3879-131

This Hand-Winding model from 1980 features a 45mm Hardlex-Coated Steel case. With its 22mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-78fd0d135b61]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
8.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
30m
Dial Color
Champagne
Jewels
17j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1980

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