Seiko Cal. 4555 - 591

The 4555-591 is a sought-after Solar piece from Seiko's golden era. Powered by the 4555 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-886819da2fb5]

Also known as: UFO, Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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