Seiko Cal. 6643 - 933

The 6643-933 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-88fa4bda8e08]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1997

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