Seiko Cal. 0740 - 689

This Hand-Winding model from 1966 features a 41mm Titanium case. With its 21mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-a74b6da3036b]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1966

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