Seiko Cal. 7187 - 542

The 7187-542 is a sought-after Solar piece from Seiko's golden era. Powered by the 7187 caliber with 24j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-4fb9fb8afb28]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1989

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