Seiko Cal. 6642 - 713

The 6642-713 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-cb69ff0f1d3d]

Also known as: Sumo, Sea Horse

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1971

Related Models

• Seiko 6288-563
• Seiko 5256-854
• Seiko 6378-838
• Seiko 6696-362
• Seiko 7187-567
• Seiko 7146-394
• Seiko 5628-275
• Seiko 6386-792
• Seiko 7178-868
• Seiko 5231-203
• Seiko 7197-132
• Seiko 4426-579