Seiko Cal. 6378 - 391

Seiko 6378-391

The 6378-391 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-63b7fd0d8358]

Also known as: Monster, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
36mm
Case Thickness
8.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Silver
Jewels
33j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1999

Related Models

seikata-wm-63b7fd0d8358