Seiko Cal. 6613 - 393

Seiko 6613-393

This Spring Drive model from 1968 features a 46mm PVD Black case. Powered by the 6613 caliber with 21j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-4ce2fa83c1d8]

Also known as: Sumo, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
46mm
Case Thickness
12.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
White
Jewels
21j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1968

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