Seiko Cal. 6691 - 707

The Seiko 6691-707 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-4204b4d1cc75]

Also known as: Helmet, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

Related Models

• Seiko 3836-902
• Seiko 4541-587
• Seiko 7138-373
• Seiko 6211-759
• Seiko 5233-107
• Seiko 5675-716
• Seiko 4522-605
• Seiko 6634-319
• Seiko 6328-753
• Seiko 4567-224
• Seiko 7199-948
• Seiko 7148-790