Seiko Cal. 6691 - 936

The 6691-936 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6691 caliber with 35j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-f1cc7576b950]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1970

Related Models

• Seiko 6352-597
• Seiko 0732-546
• Seiko 0715-677
• Seiko 4519-185
• Seiko 6219-674
• Seiko 5262-256
• Seiko 5268-715
• Seiko 7127-740
• Seiko 4425-684
• Seiko 6129-165
• Seiko 5295-804
• Seiko 6611-882