Seiko Cal. 7155 - 231

Seiko 7155-231

This Hand-Winding model from 1977 features a 37mm Titanium case. Powered by the 7155 caliber with 24j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-1b6a28921499]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
14.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Champagne
Jewels
24j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1977

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seikata-wm-1b6a28921499