Seiko Cal. 6639 - 889

This Quartz model from 1986 features a 34mm Titanium case. Powered by the 6639 caliber with 27j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-9aaf8f42ea30]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1986

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