Seiko Cal. 4491 - 548

This Hand-Winding model from 1970 features a 43mm PVD Black case. With its 21mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-948a433f05bc]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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