Seiko Cal. 5243 - 766

This Spring Drive model from 1967 features a 40mm Gold-Plated case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2601e59d47a9]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1967

Related Models

• Seiko 5241-412
• Seiko 6321-228
• Seiko 6242-633
• Seiko 7129-498
• Seiko 7121-321
• Seiko 4536-860
• Seiko 6342-527
• Seiko 6346-614
• Seiko 6221-539
• Seiko 7051-830
• Seiko 4585-998
• Seiko 5663-191