Seiko Cal. 4458 - 640

The 4458-640 is a sought-after Solar piece from Seiko's golden era. Powered by the 4458 caliber with 34j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-bb2cde8671c9]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1981

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