Seiko Cal. 6639 - 369

The Seiko 6639-369 represents an important milestone in Seiko's 1997 lineup. With its 18mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-73c3c3a89afe]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1997

Related Models

• Seiko 6196-851
• Seiko 7165-888
• Seiko 7135-836
• Seiko 6227-969
• Seiko 3887-682
• Seiko 4465-824
• Seiko 4590-556
• Seiko 5262-357
• Seiko 6292-518
• Seiko 4451-514
• Seiko 6142-635
• Seiko 4470-235