Seiko Cal. 6686 - 590

The 6686-590 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6686 caliber with 21j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-2e825a6350e1]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1977

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