Seiko Cal. 5691 - 263

This Automatic model from 1971 features a 46mm Titanium case. Powered by the 5691 caliber with 19j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-f1fcc642d24d]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1971

Related Models

• Seiko 3872-737
• Seiko 6138-967
• Seiko 4431-916
• Seiko 3820-468
• Seiko 6383-214
• Seiko 6383-596
• Seiko 4557-560
• Seiko 6259-158
• Seiko 7178-522
• Seiko 5641-424
• Seiko 4451-171
• Seiko 5219-881