Seiko Cal. 6642 - 418

The Seiko 6642-418 represents an important milestone in Seiko's 1972 lineup. Powered by the 6642 caliber with 20j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-6ead8ba6756e]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1972

Related Models

• Seiko 6270-157
• Seiko 4493-439
• Seiko 6226-443
• Seiko 4474-338
• Seiko 4418-992
• Seiko 6163-822
• Seiko 6210-212
• Seiko 3899-210
• Seiko 5659-346
• Seiko 0747-351
• Seiko 0736-922
• Seiko 6695-958