Seiko Cal. 6650 - 918

The Seiko 6650-918 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-c0052a4ebb9e]

Also known as: Sumo, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

Related Models

• Seiko 6114-476
• Seiko 7124-838
• Seiko 5627-894
• Seiko 6171-242
• Seiko 7151-759
• Seiko 7166-557
• Seiko 4598-141
• Seiko 3877-284
• Seiko 6332-308
• Seiko 5228-188
• Seiko 4458-215
• Seiko 6142-129