Seiko Cal. 7121 - 307

The Seiko 7121-307 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-73f8c00141ba]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1970

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