Seiko Cal. 7172 - 666

Seiko 7172-666

The Seiko 7172-666 represents an important milestone in Seiko's 1965 lineup. Powered by the 7172 caliber with 17j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-4e0e96de9963]

Also known as: Sumo, Helmet

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
12.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Black
Jewels
17j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1965

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