Seiko Cal. 5678 - 794

Seiko 5678-794

The Seiko 5678-794 represents an important milestone in Seiko's 1977 lineup. Powered by the 5678 caliber with 20j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-0e29718d73f6]

Also known as: Sumo, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
39mm
Case Thickness
11.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Green
Jewels
20j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1977

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