Seiko Cal. 6668 - 539

This Automatic model from 1981 features a 39mm Two-Tone case. With its 21mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-8b88d1f41fa9]

Also known as: World Timer, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1981

Related Models

• Seiko 6198-804
• Seiko 7126-831
• Seiko 3884-402
• Seiko 5632-590
• Seiko 3840-154
• Seiko 4589-822
• Seiko 4418-793
• Seiko 5681-406
• Seiko 6684-627
• Seiko 4449-175
• Seiko 7049-952
• Seiko 6629-768