Seiko Cal. 0721 - 718

This Quartz model from 1969 features a 45mm Titanium case. Powered by the 0721 caliber with 21j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-bdf9d5401b26]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1969

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