Seiko Cal. 4558 - 684

This Spring Drive model from 1970 features a 36mm Titanium case. Powered by the 4558 caliber with 24j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-555ef0759bfa]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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