Seiko Cal. 7131 - 220

The 7131-220 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7131 caliber with 33j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-0970427d50be]

Also known as: Samurai, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1969

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