Seiko Cal. 7021 - 931

The Seiko 7021-931 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-06feacadadb1]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1965

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