Seiko Cal. 6377 - 658

The Seiko 6377-658 represents an important milestone in Seiko's 1970 lineup. With its 21mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-1baf5f8b15ec]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1970

Related Models

• Seiko 7014-604
• Seiko 6683-953
• Seiko 4554-739
• Seiko 6114-958
• Seiko 6325-502
• Seiko 6391-131
• Seiko 6676-427
• Seiko 7044-887
• Seiko 6344-786
• Seiko 5674-259
• Seiko 5675-729
• Seiko 6282-986