Seiko Cal. 5661 - 972

Seiko 5661-972

The 5661-972 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-7b54a22d6f4e]

Also known as: Sumo, Helmet

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
26j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1973

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