Seiko Cal. 7181 - 330

The 7181-330 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 22j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-deb77a3c0bad]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1970

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