Seiko Cal. 7171 - 728

Seiko 7171-728

This Hand-Winding model from 1971 features a 42mm Hardlex-Coated Steel case. Powered by the 7171 caliber with 18j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-4971339a9d74]

Also known as: Sumo, Goldfeather

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
18j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1971

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seikata-wm-4971339a9d74