Seiko Cal. 6647 - 574

This Spring Drive model from 1970 features a 39mm PVD Black case. Powered by the 6647 caliber with 21j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-cbb5965d4931]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1970

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