Seiko Cal. 0721 - 683

Released in 1974, the Cal. 0721 with design code 683 was part of Seiko's domestic market collection. With its 22mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-9eec068cc143]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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