Seiko Cal. 5634 - 987

Seiko 5634-987

The Seiko 5634-987 represents an important milestone in Seiko's 1982 lineup. Powered by the 5634 caliber with 32j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-40638cfc1a8e]

Also known as: Navigator

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
41mm
Case Thickness
9.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Cream
Jewels
32j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1982

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seikata-wm-40638cfc1a8e