Seiko Cal. 7121 - 970

This Spring Drive model from 1976 features a 38mm Two-Tone case. Powered by the 7121 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-0d0352a7c93a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1976

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