Seiko Cal. 6680 - 890

The 6680-890 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6680 caliber with 29j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-fcfb6a7b6c96]

Also known as: Sumo, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1965

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