Seiko Cal. 6388 - 121

The Seiko 6388-121 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-d4b2a2ea19be]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1971

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