Seiko Cal. 4521 - 638

This Spring Drive model from 1993 features a 36mm Hardlex-Coated Steel case. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-b1de6bf6d27e]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1993

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