Seiko Cal. 6681 - 991

This Spring Drive model from 1970 features a 36mm Hardlex-Coated Steel case. With its 19mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-07b59786e82e]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1970

Related Models

• Seiko 5221-532
• Seiko 6684-658
• Seiko 6667-684
• Seiko 7059-168
• Seiko 0756-275
• Seiko 5664-771
• Seiko 6649-939
• Seiko 6271-624
• Seiko 7132-609
• Seiko 7122-396
• Seiko 7131-423
• Seiko 6140-455