Seiko Cal. 5642 - 680

This Spring Drive model from 1966 features a 41mm Gold-Plated case. Powered by the 5642 caliber with 17j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-c4efd0a49dea]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1966

Related Models

• Seiko 4584-342
• Seiko 6340-105
• Seiko 5675-101
• Seiko 7179-302
• Seiko 6157-942
• Seiko 6275-978
• Seiko 6679-552
• Seiko 6168-808
• Seiko 0784-468
• Seiko 4449-266
• Seiko 4480-621
• Seiko 4521-450