Seiko Cal. 6660 - 728

This Quartz model from 1985 features a 42mm Hardlex-Coated Steel case. Powered by the 6660 caliber with 33j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-cb4c52b773fb]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1985

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