Seiko Cal. 6647 - 740

Seiko 6647-740

This Spring Drive model from 1974 features a 46mm Titanium case. Powered by the 6647 caliber with 32j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-daeaf1927dab]

Also known as: Pogue, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
46mm
Case Thickness
14.7mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
70m
Dial Color
Burgundy
Jewels
32j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1974

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