Seiko Cal. 6681 - 831

This Spring Drive model from 1972 features a 35mm PVD Black case. Powered by the 6681 caliber with 23j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-af16358530bf]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1972

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