Seiko Cal. 6691 - 709

The 6691-709 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6691 caliber with 18j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-f47a98e83a28]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1999

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