13 Jewel Swiss Quartz Movement, Water Resistant to 100M, Tachymeter, Date Display, Luminous Hands & Numerals, Mineral Crystal, Screw Back, Genuine Leather Strap, 12 Hour Chrono Function, Locking circular slide rule converts statute miles to nautical miles, MPH to KM/H, Currency, Wieght / Length from Standard to Metric, Performs multiplication and Division

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