Seiko Cal. 6628 - 728

The Seiko 6628-728 represents an important milestone in Seiko's 1987 lineup. Powered by the 6628 caliber with 32j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-415c4431be28]

Also known as: Silverwave, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1987

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