Seiko Cal. 5638 - 456

Seiko 5638-456

This Automatic model from 1971 features a 44mm Stainless Steel case. Powered by the 5638 caliber with 19j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-29795b72cf86]

Also known as: Navigator

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
13.9mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
40m
Dial Color
Black
Jewels
19j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1971

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