Seiko Cal. 6166 - 857

The 6166-857 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6166 caliber with 24j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-20917021bd06]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1976

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