Seiko Cal. 6187 - 136

The 6187-136 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6187 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-5088c6510693]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1994

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