Seiko Cal. 6643 - 974

The 6643-974 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-643c99f18623]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1998

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