Seiko Cal. 6691 - 496

The Seiko 6691-496 represents an important milestone in Seiko's 1977 lineup. Powered by the 6691 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-8d2603e64248]

Also known as: UFO, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

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