Seiko Cal. 6628 - 664

The Seiko 6628-664 represents an important milestone in Seiko's 1990 lineup. Powered by the 6628 caliber with 18j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-46ec2165a922]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

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