Seiko Cal. 6138 - 724

The Seiko 6138-724 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-f4af34bd38d8]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1965

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