Seiko Cal. 5637 - 205

Released in 1971, the Cal. 5637 with design code 205 was part of Seiko's domestic market collection. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-6512bb94cfc8]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1971

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