Seiko Cal. 7170 - 331

Seiko 7170-331

The 7170-331 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7170 caliber with 32j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-c4698f876cfc]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
11.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Black
Jewels
32j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1982

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