Seiko Cal. 4527 - 842

The Seiko 4527-842 represents an important milestone in Seiko's 1978 lineup. Powered by the 4527 caliber with 28j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-0445e15b2270]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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