Seiko Cal. 7181 - 218

The 7181-218 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7181 caliber with 21j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-bd3676c3d02c]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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