Seiko Cal. 5638 - 974

Seiko 5638-974

The 5638-974 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5638 caliber with 18j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-1717f230c7de]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
41mm
Case Thickness
12.9mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
Navy
Jewels
18j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1990

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seikata-wm-1717f230c7de