Seiko Cal. 5618 - 531

The 5618-531 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5618 caliber with 33j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-1af6ccc048ff]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1970

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