Seiko Cal. 4554 - 139

The 4554-139 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4554 caliber with 31j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-2ef07ba2af8c]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

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