Seiko Cal. 6638 - 823

This Quartz model from 1969 features a 44mm Hardlex-Coated Steel case. Powered by the 6638 caliber with 29j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-f0f5d33e8b9c]

Also known as: Turtle, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1969

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