Seiko Cal. 4552 - 791

This Hand-Winding model from 1976 features a 40mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-01b204d0abb9]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1976

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