Seiko Cal. 4450 - 633

The 4450-633 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-a6815747bd79]

Also known as: Bullhead, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

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