Seiko Cal. 5638 - 373

Released in 1970, the Cal. 5638 with design code 373 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-2a98fdd36dbf]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1970

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