Seiko Cal. 6643 - 535

The 6643-535 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6643 caliber with 19j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-f842d0702dd0]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1985

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