Seiko Cal. 0728 - 991

The Seiko 0728-991 represents an important milestone in Seiko's 1966 lineup. With its 18mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-5bd78c44dcdb]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1966

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