Seiko Cal. 4540 - 591

The 4540-591 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4540 caliber with 24j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-2994ce0dd510]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1968

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