Seiko Cal. 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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