Seiko Cal. 5637 - 113

This Spring Drive model from 1985 features a 36mm Gold-Plated case. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-28555c4ae1af]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1985

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