Seiko Cal. 7031 - 350

Seiko 7031-350

This Hand-Winding model from 1971 features a 36mm PVD Black case. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-e2a4a1d11fda]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
14.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Black
Jewels
19j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1971

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