Seiko Cal. 6390 - 677

This Hand-Winding model from 1970 features a 34mm Titanium case. With its 22mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-ec2b7524bdb6]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1970

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