Seiko Cal. 7128 - 635

The Seiko 7128-635 represents an important milestone in Seiko's 1994 lineup. Powered by the 7128 caliber with 28j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-217370a1ede7]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1994

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