Global Positioning Systems (GPS)

Polar Grit X Pro Titan - Premium Outdoor GPS Sports Watch, Sapphire Glass, Wrist-based Heart Rate Monitor, Ultra-Long Battery, Navigation - Trail Running, Mountain Biking - Black-Red POLAR GRIT X PRO TITAN is the lightest and toughest watch in our Outdoor line-up. The ultra-strength titanium bezel and military-level durability make it the best choice for more extreme demands, enabling you to go wherever your heart takes you.... Polar Grit X Pro Titan - Premium Outdoor GPS Sports Watch, Sapphire Glass, Wrist-based Heart Rate Monitor, Ultra-Long Battery, Navigation - Trail Running, Mountain Biking - Black-Red