Seiko Cal. 6640 - 115

The Seiko 6640-115 represents an important milestone in Seiko's 1967 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-a2a6d1a960b0]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1967

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