- br br Top Deal Review - Timex Global Trainer Heart Rate and GPS Watchbr br Product Descriptionbr Amazon.combr Get pace, speed, distance, and more on your wrist. With SiRFstarIII GPS technology and ANT+ compatibility, this Ironman Global Trainer GPS watch from Timex records your performance across several dimensions--including pace, speed, distance, and more--providing real-time data on a customizable screen. The watch measures your location with altitude ascent and descent distances and rates, records up to 100 location waypoints to track back and create routes, and recalls up to 50 custom routes for pace tracking. The device offers six modes of operation including performance and multisport modes. The SiRFstarIII GPS technology requires no calibration.br Features:br br Customizable screen display show up to four windows of informationbr 20-workout memory with dated summary records up to 1,000 laps of informationbr Chronograph with interval and countdown timers measures performancebr Records elapsed time, calories burned, and performance data for each lapbr Hands-free option automatically starts and stops data capture functionsbr Compatible with Windows XP or newer and with Mac OS X10.