Seiko Cal. 5637 - 939

The 5637-939 is a sought-after Kinetic piece from Seiko's golden era. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-b97824605d27]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1989

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