Seiko Cal. 7183 - 248

This Automatic model from 1971 features a 43mm Titanium case. Powered by the 7183 caliber with 31j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-d73b6e17a33c]

Also known as: Monster, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1971

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