Seiko Cal. 6613 - 647

Seiko 6613-647

The 6613-647 is a sought-after Solar piece from Seiko's golden era. Powered by the 6613 caliber with 29j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-bcbb4d325bea]

Also known as: Sumo, Sea Horse

Specifications

Movement
Solar
Case Material
Titanium
Case Width
40mm
Case Thickness
15.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1984

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