Seiko Cal. 6638 - 892

The Seiko 6638-892 represents an important milestone in Seiko's 1973 lineup. Powered by the 6638 caliber with 32j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-f3eaa80da62e]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1973

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