Seiko Cal. 6321 - 550

This Hand-Winding model from 1973 features a 43mm Gold-Plated case. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-5794320ea491]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1973

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