Seiko Cal. 6640 - 272

The Seiko 6640-272 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-0a42564ee2fb]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1989

Related Models

• Seiko 6350-538
• Seiko 4481-635
• Seiko 6175-320
• Seiko 0730-425
• Seiko 5282-677
• Seiko 7024-514
• Seiko 5627-979
• Seiko 4451-273
• Seiko 3824-818
• Seiko 0745-615
• Seiko 5663-758
• Seiko 6110-977