Seiko Cal. 5639 - 561

This Quartz model from 1966 features a 44mm Stainless Steel case. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-3f71e75b3d82]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1966

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