Seiko Cal. 6641 - 864

The Seiko 6641-864 represents an important milestone in Seiko's 1981 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-f970e9ee7015]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1981

Related Models

• Seiko 6342-188
• Seiko 5654-785
• Seiko 5689-300
• Seiko 6219-221
• Seiko 0762-192
• Seiko 0787-567
• Seiko 4595-350
• Seiko 5257-493
• Seiko 5223-646
• Seiko 6384-466
• Seiko 3824-412
• Seiko 5220-124