Seiko Cal. 4438 - 503

The 4438-503 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-3c1fd8335ecb]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1979

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