Seiko Cal. 6691 - 433

This Hand-Winding model from 1982 features a 44mm Titanium case. Powered by the 6691 caliber with 25j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-f7ddcbb77ae0]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1982

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