Seiko Cal. 6639 - 782

This Solar model from 1979 features a 34mm Stainless Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-bf57707dfe20]

Also known as: Monster, Sportsmatic

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1979

Related Models

• Seiko 6263-438
• Seiko 7136-778
• Seiko 4527-955
• Seiko 5264-581
• Seiko 5211-615
• Seiko 6172-340
• Seiko 7166-790
• Seiko 4462-457
• Seiko 6661-231
• Seiko 6161-442
• Seiko 5240-615
• Seiko 7185-989