Seiko Cal. 5634 - 274

This Automatic model from 1972 features a 40mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-731d97d5cd41]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1972

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