Seiko Cal. 4491 - 616

Seiko 4491-616

The 4491-616 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4491 caliber with 25j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-5ff55953569a]

Also known as: Turtle, Emperor

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
44mm
Case Thickness
13.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
25j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1978

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