Seiko Cal. 6691 - 233

The Seiko 6691-233 represents an important milestone in Seiko's 1996 lineup. Powered by the 6691 caliber with 30j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-9de5ce957b36]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

38mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1996

Related Models

• Seiko 4564-443
• Seiko 7154-594
• Seiko 4433-912
• Seiko 6229-104
• Seiko 6685-213
• Seiko 6360-558
• Seiko 5226-219
• Seiko 0782-820
• Seiko 4431-449
• Seiko 6693-456
• Seiko 5294-789
• Seiko 7138-468