Seiko Cal. 6636 - 861

The Seiko 6636-861 represents an important milestone in Seiko's 1984 lineup. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-45f4f779caf3]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1984

Related Models

• Seiko 7024-931
• Seiko 3883-478
• Seiko 4540-504
• Seiko 7122-610
• Seiko 5661-533
• Seiko 7016-354
• Seiko 5287-316
• Seiko 7056-416
• Seiko 7147-358
• Seiko 0785-370
• Seiko 6312-548
• Seiko 4551-579