Seiko Cal. 6390 - 343

This Spring Drive model from 1977 features a 34mm Stainless Steel case. Powered by the 6390 caliber with 29j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-f482fd775f94]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1977

Related Models

• Seiko 7121-726
• Seiko 6673-712
• Seiko 3883-475
• Seiko 4499-661
• Seiko 6655-713
• Seiko 5255-715
• Seiko 7038-528
• Seiko 6292-991
• Seiko 4494-734
• Seiko 4473-788
• Seiko 6342-188
• Seiko 3815-745