Seiko Cal. 6378 - 190

Seiko 6378-190

The 6378-190 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e268a5c8f9e9]

Also known as: Monster, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
43mm
Case Thickness
8.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
180m
Dial Color
Black
Jewels
19j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1970

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