Seiko Cal. 6640 - 614

The Seiko 6640-614 represents an important milestone in Seiko's 1976 lineup. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-a80dd1c977a7]

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1976

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