Seiko Cal. 7140 - 436

The 7140-436 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7140 caliber with 32j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-57eca2902ab4]

Also known as: Panda, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1966

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