Seiko Cal. 6658 - 188

The 6658-188 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6658 caliber with 28j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-d44de98a026d]

Also known as: Monster, Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1977

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