Seiko Cal. 5634 - 327

Seiko 5634-327

The Seiko 5634-327 represents an important milestone in Seiko's 1970 lineup. Powered by the 5634 caliber with 21j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-eaf71106719e]

Also known as: Helmet

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
34mm
Case Thickness
8.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Navy
Jewels
21j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1970

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