Seiko Cal. 7021 - 504

The Seiko 7021-504 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-5eaebc7aa13c]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1981

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