Seiko Cal. 6643 - 363

The 6643-363 is a sought-after Automatic piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-20382c25242c]

Also known as: Silverwave, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1970

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