Seiko Cal. 5638 - 316

The Seiko 5638-316 represents an important milestone in Seiko's 1969 lineup. Powered by the 5638 caliber with 26j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-574f07dbe725]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1969

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