Seiko Cal. 6637 - 414

The 6637-414 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f5376888803f]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1994

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