Seiko Cal. 5242 - 509

The Seiko 5242-509 represents an important milestone in Seiko's 1980 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ff0157fe5e00]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1980

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