The easiest most productive call just got better.- The H2O will operate under any hunting condition. - Rainy, no problem, the H2O is waterproof. - Windy, no problem, the H2O carries loud and clear. - Highly waterproof coating allows the H20 to work in the heaviest rain storms. The H20 is the truly all weather, all condition, easiest call to operate for today�s turkey hunter. Requires no chalking.