Seiko Cal. 7181 - 880

The 7181-880 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 24j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-0acf71fa2bb3]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1965

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