Seiko Cal. 7017 - 331

Seiko 7017-331

Released in 1977, the Cal. 7017 with design code 331 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-0528b055bcf6]

Also known as: Helmet, Flighty

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Black
Jewels
36j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1977

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