Seiko Cal. 6687 - 728

The Seiko 6687-728 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-445861b346b8]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1965

Related Models

• Seiko 6272-658
• Seiko 0763-850
• Seiko 4590-418
• Seiko 7147-731
• Seiko 6233-785
• Seiko 6614-868
• Seiko 0796-726
• Seiko 5611-460
• Seiko 6374-104
• Seiko 0796-908
• Seiko 4438-520
• Seiko 6148-341