Seiko Cal. 4560 - 642

This Automatic model from 1979 features a 46mm Hardlex-Coated Steel case. Powered by the 4560 caliber with 32j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-bf7ef7e5bcaf]

Also known as: Sumo, Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1979

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