Quaker Boy H2O Easy Yelper Game Call. The Quaker Boy H2O Call will operate under any hunting condition. - Rainy? No problem - the H2O is waterproof. Windy? No problem - the H2O carries loud and clear. A highly waterproof coating allows the H20 to work in the heaviest rain storms. The Quaker Boy H20 Easy Yelper Turkey Call is the truly all-weather all-condition easiest call to operate for today's turkey hunter. Requires no chalking. Package Contents: Quaker Boy H2O Easy Yelper Turkey Call Quaker Boy 13608: H2O Easy Yelper Game Call