Seiko Cal. 4578 - 605

This Spring Drive model from 1991 features a 40mm Titanium case. Powered by the 4578 caliber with 34j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-d92541d937fa]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1991

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