Seiko Cal. 4578 - 640

This Spring Drive model from 1990 features a 36mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-f2c72e7b5420]

Also known as: Shogun, Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1990

Related Models

• Seiko 5256-449
• Seiko 5640-960
• Seiko 6312-941
• Seiko 4478-196
• Seiko 6383-541
• Seiko 5621-140
• Seiko 3895-292
• Seiko 4496-574
• Seiko 5272-134
• Seiko 4495-628
• Seiko 6148-255
• Seiko 3810-634