Seiko Cal. 4540 - 488

This Spring Drive model from 1967 features a 37mm PVD Black case. Powered by the 4540 caliber with 17j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-47164effca44]

Also known as: Goldfeather, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1967

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