The Revo's have been tested in the harshest of environments and have proven capable of withstanding some pretty extreme conditions, from the wilds of Scotland, through the dry and dusty trails of Colorado to the bitter and jagged trails of Norway and beyond. Both units are designed to IP (Ingress Protection) 66 standards making them "dust tight" and "protected against heavy seas or powerful jets of water". Although not designed for IP67 (Submersion) they have proven in many tests to be capable of withstanding immersion for periods of time such as during extended river crossings for example. The ultimate test of our systems though is with our pro-team partners. the level of use and abuse they receive in just a week is equivalent to what many will put them through in months or years. Surviving this test is the ultimate measure of their durability.