Seiko Cal. 7128 - 818

This Spring Drive model from 1972 features a 44mm Titanium case. Powered by the 7128 caliber with 29j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-983d9d5b7fce]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1972

Related Models

• Seiko 4575-202
• Seiko 6116-372
• Seiko 0789-510
• Seiko 3827-376
• Seiko 7085-579
• Seiko 4417-472
• Seiko 4414-845
• Seiko 4428-386
• Seiko 4441-600
• Seiko 3885-972
• Seiko 7069-721
• Seiko 0724-439