Seiko Cal. 0721 - 819

The Seiko 0721-819 represents an important milestone in Seiko's 1973 lineup. Powered by the 0721 caliber with 31j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-448ca0a98d25]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1973

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