Seiko Cal. 6691 - 321

Seiko 6691-321

The Seiko 6691-321 represents an important milestone in Seiko's 1991 lineup. Powered by the 6691 caliber with 28j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-72428b4e9f0d]

Also known as: Turtle, Monster

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
45mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1991

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