Seiko Cal. 6388 - 171

The Seiko 6388-171 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-928dd96cee2c]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1970

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