Seiko Cal. 0728 - 163

The Seiko 0728-163 represents an important milestone in Seiko's 1972 lineup. With its 20mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-5a8b0028b920]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1972

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