Seiko Cal. 0721 - 998

The Seiko 0721-998 represents an important milestone in Seiko's 1976 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-a5c89ce8d0c0]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1976

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