Seiko Cal. 4535 - 989

This Spring Drive model from 1981 features a 42mm Hardlex-Coated Steel case. Powered by the 4535 caliber with 23j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-af31ea656fb1]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1981

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