Seiko Cal. 6639 - 436

This Kinetic model from 1983 features a 40mm Stainless Steel case. Powered by the 6639 caliber with 36j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-f3fc94b1cea3]

Also known as: Turtle, Navigator

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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