Seiko Cal. 6638 - 548

The Seiko 6638-548 represents an important milestone in Seiko's 1990 lineup. Powered by the 6638 caliber with 35j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-75cd1e00c198]

Also known as: Pogue, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1990

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