Seiko Cal. 6686 - 637

The 6686-637 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6686 caliber with 28j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-0ddc927cc6cb]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1983

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