Seiko Cal. 5643 - 370

This Quartz model from 1978 features a 44mm Stainless Steel case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-9ffbba087a02]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1978

Related Models

• Seiko 4578-149
• Seiko 3830-129
• Seiko 6391-939
• Seiko 6266-311
• Seiko 3874-404
• Seiko 3848-693
• Seiko 5658-483
• Seiko 6310-394
• Seiko 6617-713
• Seiko 4537-882
• Seiko 4597-700
• Seiko 4575-822