Seiko Cal. 5657 - 993

This Hand-Winding model from 1970 features a 36mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-9686b49e38fa]

Also known as: Goldfeather, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1970

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