Seiko Cal. 5678 - 820

The 5678-820 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5678 caliber with 22j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-3182851c8dfc]

Also known as: Monster, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1973

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