Seiko Cal. 5638 - 140

The Seiko 5638-140 represents an important milestone in Seiko's 1995 lineup. Powered by the 5638 caliber with 20j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-8b7e6960b0ea]

Also known as: Sea Horse, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1995

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