Seiko Cal. 6691 - 588

The 6691-588 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6691 caliber with 18j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-1eedaeb0e738]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1967

Related Models

• Seiko 3842-656
• Seiko 6339-146
• Seiko 5223-510
• Seiko 6379-331
• Seiko 6296-799
• Seiko 6314-674
• Seiko 6244-882
• Seiko 4476-452
• Seiko 4569-602
• Seiko 6111-282
• Seiko 6227-214
• Seiko 7172-472