Seiko Cal. 5640 - 155

The 5640-155 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5640 caliber with 26j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-cad4f04854c4]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1984

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