Seiko Cal. 4418 - 656

Seiko 4418-656

The Seiko 4418-656 represents an important milestone in Seiko's 1970 lineup. Powered by the 4418 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-dc8e192c3d73]

Also known as: Bullhead, Silverwave

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
44mm
Case Thickness
11.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Black
Jewels
20j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1970

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seikata-wm-dc8e192c3d73