Seiko Cal. 4487 - 255

The 4487-255 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4487 caliber with 32j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-e8c50ee8fe8d]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1973

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