Seiko Cal. 5643 - 722

Seiko 5643-722

The 5643-722 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-dfe8c62e73af]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
15.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
30j
Frequency
28,800 bph
Power Reserve
42 hours
Year
1969

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