Seiko Cal. 7021 - 304

The Seiko 7021-304 represents an important milestone in Seiko's 1981 lineup. Powered by the 7021 caliber with 20j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-54c723f0cd9f]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1981

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