Seiko Cal. 6640 - 291

This Quartz model from 1972 features a 34mm Gold-Plated case. Powered by the 6640 caliber with 23j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-6b8a40305cad]

Also known as: UFO, Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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