Seiko Cal. 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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