Seiko Cal. 6378 - 897

Seiko 6378-897

The 6378-897 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-312f93b71567]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
14.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
130m
Dial Color
Champagne
Jewels
27j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1969

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