Seiko Cal. 7181 - 535

The 7181-535 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 17j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-d4e6a6e90581]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1966

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