Seiko Cal. 6659 - 638

The Seiko 6659-638 represents an important milestone in Seiko's 1992 lineup. With its 21mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-0d1b1eaa74ab]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1992

Related Models

• Seiko 0730-680
• Seiko 0747-533
• Seiko 5675-721
• Seiko 6232-388
• Seiko 4478-864
• Seiko 6133-952
• Seiko 5645-743
• Seiko 6330-675
• Seiko 7194-850
• Seiko 4569-937
• Seiko 5244-318
• Seiko 5641-756