Seiko Cal. 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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