Seiko Cal. 3818 - 509

Released in 1973, the Cal. 3818 with design code 509 was part of Seiko's domestic market collection. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-7a6bfd94feca]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1973

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