Seiko Cal. 5637 - 437

This Hand-Winding model from 1984 features a 36mm Stainless Steel case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-7b0762c7b8cc]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1984

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