Seiko Cal. 5681 - 670

This Spring Drive model from 1996 features a 40mm Two-Tone case. Powered by the 5681 caliber with 22j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-d92d68361aa3]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1996

Related Models

• Seiko 6349-582
• Seiko 6682-374
• Seiko 3834-292
• Seiko 0777-467
• Seiko 7191-842
• Seiko 4474-135
• Seiko 6185-143
• Seiko 4413-663
• Seiko 6291-530
• Seiko 6648-830
• Seiko 6256-947
• Seiko 0775-264