Seiko Cal. 7180 - 643

Seiko 7180-643

This Automatic model from 1975 features a 45mm Hardlex-Coated Steel case. Powered by the 7180 caliber with 21j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-51633d2687ff]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
13.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1975

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