Seiko Cal. 6640 - 681

This Spring Drive model from 1998 features a 36mm Two-Tone case. It features a Champagne dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-403d99905319]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1998

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