Seiko Cal. 6187 - 981

The 6187-981 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6187 caliber with 29j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-18b4a63e1676]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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