Seiko Cal. 5637 - 288

Seiko 5637-288

The 5637-288 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5637 caliber with 22j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-ebeb458e9031]

Also known as: Sumo, Flighty

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
36mm
Case Thickness
8.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1979

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seikata-wm-ebeb458e9031