Seiko Cal. 5636 - 634

Seiko 5636-634

The 5636-634 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5636 caliber with 19j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-b026f8edef46]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
11.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Burgundy
Jewels
19j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1971

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