Seiko Cal. 0722 - 920

The Seiko 0722-920 represents an important milestone in Seiko's 1972 lineup. Powered by the 0722 caliber with 25j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-e67d6cddfc25]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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