Seiko Cal. 5242 - 309

The Seiko 5242-309 represents an important milestone in Seiko's 1965 lineup. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-93e3a10a5b81]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1965

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