Seiko Cal. 4555 - 642

The 4555-642 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4555 caliber with 30j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-794d5eec1c87]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1999

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