Seiko Cal. 6391 - 688

The 6391-688 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6391 caliber with 19j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-e47250922e77]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1967

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