Seiko Cal. 4587 - 373

The 4587-373 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4587 caliber with 23j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-a12b51657334]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1995

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