Seiko Cal. 0721 - 342

The Seiko 0721-342 represents an important milestone in Seiko's 1978 lineup. Powered by the 0721 caliber with 21j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-b06fe7416cd5]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1978

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