Seiko Cal. 6138 - 121

The Seiko 6138-121 represents an important milestone in Seiko's 1966 lineup. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-5236cd531df8]

Also known as: Turtle, Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

35mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1966

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