Seiko Cal. 6640 - 114

This Spring Drive model from 1997 features a 36mm Two-Tone case. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-3b9455cf7361]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1997

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