Seiko Cal. 6278 - 527

This Spring Drive model from 1988 features a 42mm PVD Black case. Powered by the 6278 caliber with 24j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-47ba8e5afe83]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1988

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