Seiko Cal. 6656 - 186

The 6656-186 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6656 caliber with 33j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-5688c4668c18]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1979

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