Seiko Cal. 7177 - 739

Seiko 7177-739

This Spring Drive model from 1965 features a 46mm Hardlex-Coated Steel case. Powered by the 7177 caliber with 31j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-130483118ece]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.1mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Burgundy
Jewels
31j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1965

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seikata-wm-130483118ece