Seiko Cal. 6643 - 849

The 6643-849 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-e952ba9f8b34]

Also known as: Sportsmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1988

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