Seiko Cal. 7020 - 137

The 7020-137 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7020 caliber with 25j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-05f2e5bcdcdf]

Also known as: Monster, Goldfeather

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1978

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