Seiko Cal. 6178 - 691

Seiko 6178-691

This Hand-Winding model from 1971 features a 35mm Hardlex-Coated Steel case. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-dae5c45b8aee]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Champagne
Jewels
28j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1971

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