Seiko Cal. 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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