Seiko Cal. 6643 - 708

The Seiko 6643-708 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-5c8ff347cd1b]

Also known as: Pogue, Panda

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

Related Models

• Seiko 4498-720
• Seiko 7146-671
• Seiko 5215-317
• Seiko 0733-611
• Seiko 6287-243
• Seiko 5659-900
• Seiko 6194-135
• Seiko 6269-635
• Seiko 0770-233
• Seiko 6236-908
• Seiko 6368-608
• Seiko 7039-533