Seiko Cal. 6613 - 640

Seiko 6613-640

The Seiko 6613-640 represents an important milestone in Seiko's 1969 lineup. Powered by the 6613 caliber with 33j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-6ea597a63830]

Also known as: Turtle, Monster

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
8.5mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
White
Jewels
33j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1969

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