Seiko Cal. 6678 - 539

This Spring Drive model from 1966 features a 42mm PVD Black case. Powered by the 6678 caliber with 22j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-423877545aef]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1966

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