Seiko Cal. 5638 - 815

The 5638-815 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5638 caliber with 19j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-1ac9bebbbd5d]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1978

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