Seiko Cal. 4576 - 787

This Spring Drive model from 1980 features a 46mm Titanium case. Powered by the 4576 caliber with 20j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-080d6934abe2]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1980

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