Seiko Cal. 5639 - 931

The Seiko 5639-931 represents an important milestone in Seiko's 1995 lineup. Powered by the 5639 caliber with 19j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-31546deb376f]

Also known as: Turtle, Shogun

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1995

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