Seiko Cal. 6699 - 640

This Quartz model from 1980 features a 35mm Hardlex-Coated Steel case. Powered by the 6699 caliber with 36j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-492c16c07844]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1980

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