Seiko Cal. 6681 - 764

The 6681-764 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6681 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-fbade165165b]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1987

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