Seiko Cal. 5691 - 357

This Spring Drive model from 1989 features a 36mm Two-Tone case. Powered by the 5691 caliber with 36j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-61c160b1bf5f]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1989

Related Models

• Seiko 4471-116
• Seiko 6640-380
• Seiko 4530-532
• Seiko 6637-405
• Seiko 0741-403
• Seiko 4510-479
• Seiko 4597-612
• Seiko 7024-322
• Seiko 5285-180
• Seiko 3824-642
• Seiko 6122-579
• Seiko 7169-420