Seiko Cal. 4491 - 616

Seiko 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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