Seiko Cal. 5681 - 231

This Quartz model from 1979 features a 36mm Titanium case. Powered by the 5681 caliber with 27j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-2df24f654ec0]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1979

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