Seiko Cal. 4538 - 700

This Automatic model from 1966 features a 36mm Stainless Steel case. Powered by the 4538 caliber with 21j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-3c5c13a904dc]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1966

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