Seiko Cal. 6391 - 124

This Hand-Winding model from 1978 features a 45mm Titanium case. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-044c8f9c7bcc]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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