Seiko Cal. 6678 - 390

Seiko 6678-390

This Hand-Winding model from 1968 features a 45mm Gold-Plated case. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-20ea093c1efb]

Also known as: Silverwave, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
11.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Cream
Jewels
26j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1968

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