Seiko Cal. 6640 - 645

The 6640-645 is a sought-after Kinetic piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-dc060bf16362]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1988

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