Seiko Cal. 4493 - 427

This Spring Drive model from 1966 features a 38mm Hardlex-Coated Steel case. Powered by the 4493 caliber with 30j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-669c9e1552b2]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1966

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