Seiko Cal. 7021 - 231

The Seiko 7021-231 represents an important milestone in Seiko's 1967 lineup. Powered by the 7021 caliber with 24j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-84846bf67819]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1967

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