Seiko Cal. 6660 - 632

The Seiko 6660-632 represents an important milestone in Seiko's 1986 lineup. Powered by the 6660 caliber with 29j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-eb917dca9499]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1986

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