Seiko Cal. 4560 - 633

This Spring Drive model from 1988 features a 36mm Titanium case. Powered by the 4560 caliber with 30j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-69aef1bd0fb8]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1988

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