Seiko Cal. 6643 - 530

The 6643-530 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-683ec270cfbc]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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