Seiko Cal. 4540 - 593

The 4540-593 is a sought-after Solar piece from Seiko's golden era. Powered by the 4540 caliber with 36j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-10590b3b0ac1]

Also known as: Sea Horse

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1997

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