Seiko Cal. 7177 - 685

The 7177-685 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7177 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-ae80849dcdc9]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

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