Seiko Cal. 6691 - 233

This Spring Drive model from 1987 features a 38mm PVD Black case. Powered by the 6691 caliber with 34j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-727663a38bc4]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1987

Related Models

• Seiko 7165-179
• Seiko 0723-593
• Seiko 4420-778
• Seiko 7046-103
• Seiko 4513-673
• Seiko 6667-542
• Seiko 6389-224
• Seiko 3842-155
• Seiko 4554-387
• Seiko 7069-320
• Seiko 6292-647
• Seiko 5666-186