Seiko Cal. 6640 - 476

The Seiko 6640-476 represents an important milestone in Seiko's 1997 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-28189e660b05]

Also known as: UFO, Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1997

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