Seiko Cal. 7120 - 637

Released in 1981, the Cal. 7120 with design code 637 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-f5dc70ef717b]

Also known as: Sumo, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1981

Related Models

• Seiko 0761-712
• Seiko 4579-779
• Seiko 6287-153
• Seiko 3876-161
• Seiko 4592-417
• Seiko 4424-159
• Seiko 4532-724
• Seiko 7119-936
• Seiko 5274-893
• Seiko 0751-643
• Seiko 6194-404
• Seiko 6265-420