Seiko Cal. 0721 - 890

The Seiko 0721-890 represents an important milestone in Seiko's 1971 lineup. Powered by the 0721 caliber with 36j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-fbd13632ae98]

Also known as: Tuna, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1971

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