Seiko Cal. 7180 - 678

The 7180-678 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7180 caliber with 28j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-842c067f4cee]

Also known as: Sea Horse, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1991

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