Seiko Cal. 6678 - 570

The 6678-570 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6678 caliber with 34j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-9842eed76ad1]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1977

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