Seiko Cal. 6128 - 728

The 6128-728 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6128 caliber with 31j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-d51688aeb8f1]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1983

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