Seiko Cal. 5638 - 327

Seiko 5638-327

This Hand-Winding model from 1966 features a 45mm Titanium case. Powered by the 5638 caliber with 30j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-43023fb0204e]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
45mm
Case Thickness
15.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Black
Jewels
30j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1966

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