Seiko Cal. 5678 - 391

The Seiko 5678-391 represents an important milestone in Seiko's 1989 lineup. With its 20mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-96e115ead7cd]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1989

Related Models

• Seiko 7048-897
• Seiko 5687-392
• Seiko 4462-921
• Seiko 5236-579
• Seiko 6692-388
• Seiko 4531-705
• Seiko 4421-616
• Seiko 5249-748
• Seiko 0739-166
• Seiko 0729-230
• Seiko 5227-740
• Seiko 6270-906