Seiko Cal. 4491 - 616

The Seiko 4491-616 represents an important milestone in Seiko's 1980 lineup. Powered by the 4491 caliber with 19j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-683ebaeb17f3]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1980

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