Seiko Cal. 6643 - 376

Released in 1987, the Cal. 6643 with design code 376 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-7ba427ae18d8]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1987

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