Seiko Cal. 4557 - 650

Seiko 4557-650

The Seiko 4557-650 represents an important milestone in Seiko's 1984 lineup. Powered by the 4557 caliber with 35j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-3bb4f6f952e9]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
43mm
Case Thickness
14.0mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Cream
Jewels
35j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1984

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