(TrendHunter.com) The TAG Heuer Monaco Split Seconds Chronograph Air 1 debuts advanced materials by using a Grade 5 titanium case produced through additive manufacturing to house the Calibre TH81 00 split seconds…(TrendHunter.com) The TAG Heuer Monaco Split Seconds Chronograph Air 1 debuts advanced materials by using a Grade 5 titanium case produced through additive manufacturing to house the Calibre TH81 00 split seconds…