Seiko Cal. 5636 - 857

The 5636-857 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5636 caliber with 26j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-9e0a038ff2ba]

Also known as: Samurai, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1986

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