Seiko Cal. 5637 - 129

Seiko 5637-129

The Seiko 5637-129 represents an important milestone in Seiko's 1987 lineup. Powered by the 5637 caliber with 33j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-94867e49e54e]

Also known as: Sumo, Emperor

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
80m
Dial Color
White
Jewels
33j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1987

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