Seiko Cal. 5636 - 139

The 5636-139 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5636 caliber with 31j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-b216005ac8b6]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1979

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