Seiko Cal. 5638 - 163

The 5638-163 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5638 caliber with 18j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-78ca52ada9c9]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1969

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