Seiko Cal. 4540 - 128

This Automatic model from 1974 features a 35mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-806a74bee1c9]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1974

Related Models

• Seiko 7011-828
• Seiko 6665-981
• Seiko 7181-262
• Seiko 0748-362
• Seiko 6636-561
• Seiko 3825-206
• Seiko 4442-304
• Seiko 5682-211
• Seiko 0741-330
• Seiko 6393-611
• Seiko 6132-131
• Seiko 7146-251