Seiko Cal. 5636 - 931

The 5636-931 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5636 caliber with 35j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-58fa0d89f80f]

Also known as: Bellmatic, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1979

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