Seiko Cal. 6643 - 973

This Spring Drive model from 1990 features a 40mm Stainless Steel case. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-a2e90812526b]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1990

Related Models

• Seiko 4562-253
• Seiko 6360-868
• Seiko 5246-935
• Seiko 5241-310
• Seiko 3880-711
• Seiko 5256-757
• Seiko 5665-819
• Seiko 3893-707
• Seiko 6360-943
• Seiko 6221-665
• Seiko 7017-871
• Seiko 0710-141