Seiko Cal. 7180 - 550

The 7180-550 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7180 caliber with 26j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-9d9501969c72]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1997

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