Seiko Cal. 0721 - 921

The Seiko 0721-921 represents an important milestone in Seiko's 1970 lineup. Powered by the 0721 caliber with 32j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-2ed62bb59d51]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1970

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