Seiko Cal. 6240 - 270

The Seiko 6240-270 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-7899bb83dc6d]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1979

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