Seiko Cal. 6661 - 231

The 6661-231 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6661 caliber with 26j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-604ab509baec]

Also known as: Tuna, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1977

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