Seiko Cal. 7187 - 856

Seiko 7187-856

The 7187-856 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-02228df6227e]

Also known as: Monster, Helmet

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
8.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
160m
Dial Color
Navy
Jewels
31j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1971

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