Seiko Cal. 4552 - 742

This Hand-Winding model from 1981 features a 45mm Stainless Steel case. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-e6e16f0fc0b6]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1981

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