Seiko Cal. 5638 - 891

Seiko 5638-891

This Automatic model from 1974 features a 39mm Stainless Steel case. Powered by the 5638 caliber with 17j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-6a360ebdcf90]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
10.8mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Cream
Jewels
17j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1974

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