Seiko Cal. 6640 - 201

This Spring Drive model from 1995 features a 37mm PVD Black case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3321bc783208]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1995

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