Seiko Cal. 6681 - 587

This Hand-Winding model from 1981 features a 43mm Two-Tone case. Powered by the 6681 caliber with 29j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-994ee127a700]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1981

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