Seiko Cal. 5688 - 203

The Seiko 5688-203 represents an important milestone in Seiko's 1965 lineup. With its 19mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-bf5f5d367a99]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1965

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