Seiko Cal. 5691 - 816

The Seiko 5691-816 represents an important milestone in Seiko's 1981 lineup. Powered by the 5691 caliber with 17j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-c78a1884855f]

Also known as: Crown, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1981

Related Models

• Seiko 7143-768
• Seiko 6119-794
• Seiko 3826-163
• Seiko 6367-669
• Seiko 6296-942
• Seiko 3811-583
• Seiko 6391-421
• Seiko 6197-283
• Seiko 6389-272
• Seiko 5288-157
• Seiko 5674-311
• Seiko 6682-325