Seiko Cal. 6313 - 128

This Spring Drive model from 1977 features a 44mm Stainless Steel case. With its 18mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-758a4029f518]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1977

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