Seiko Cal. 5684 - 178

Seiko 5684-178

The Seiko 5684-178 represents an important milestone in Seiko's 1980 lineup. Powered by the 5684 caliber with 31j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-b8f3dd3e668e]

Also known as: Monster, Bellmatic

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
41mm
Case Thickness
10.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
50m
Dial Color
Cream
Jewels
31j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1980

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