Seiko Cal. 6113 - 903

The Seiko 6113-903 represents an important milestone in Seiko's 1979 lineup. With its 22mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-9de8ad80bd8d]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1979

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