Seiko Cal. 6642 - 999

The Seiko 6642-999 represents an important milestone in Seiko's 1970 lineup. Powered by the 6642 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-a13e987e9391]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1970

Related Models

• Seiko 5615-517
• Seiko 6244-958
• Seiko 4418-676
• Seiko 4567-435
• Seiko 4484-721
• Seiko 7037-791
• Seiko 6326-485
• Seiko 6382-426
• Seiko 6649-528
• Seiko 0760-332
• Seiko 6386-951
• Seiko 0786-742