Seiko Cal. 6163 - 278

Seiko 6163-278

The 6163-278 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6163 caliber with 20j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-cc81d8d3c4f2]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
38mm
Case Thickness
14.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Cream
Jewels
20j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1968

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