Seiko Cal. 5639 - 881

Seiko 5639-881

The Seiko 5639-881 represents an important milestone in Seiko's 1972 lineup. Powered by the 5639 caliber with 19j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-8d7c91c2c5e7]

Also known as: Sumo, Emperor

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
35mm
Case Thickness
15.4mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Silver
Jewels
19j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1972

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