Seiko Cal. 7187 - 438

Seiko 7187-438

The 7187-438 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7187 caliber with 18j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-7a7abf0985d7]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
35mm
Case Thickness
13.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Cream
Jewels
18j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1995

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