Seiko Cal. 6646 - 207

Released in 1974, the Cal. 6646 with design code 207 was part of Seiko's domestic market collection. With its 20mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-e6bafa4222ee]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1974

Related Models

• Seiko 3834-192
• Seiko 7145-107
• Seiko 7070-102
• Seiko 0726-761
• Seiko 5285-498
• Seiko 7052-185
• Seiko 6266-842
• Seiko 6336-814
• Seiko 5230-572
• Seiko 3823-980
• Seiko 7153-238
• Seiko 3857-239