Shure PGX24/SM58 Handheld Microphone System combines rugged, trusted Shure SM58 mic with proven wireless technology. Shure PGX24/SM58 consists of a PGX2 handheld transmitter with a SM58 handheld microphone and a PGX4 wireless receiver. PGX24 SM58 UHF Wireless Radio system delivers professional quality sound and true freedom of movement, designed to meet the needs of travelling performers. Shure PGX4 wireless receiver utilizes microprocessor-controlled Predictive Diversity to improve reception and minimize dropouts. Shure PGX24/SM58 features extended range and long battery life, plus easy setup and operation. Shure PGX24 SM58 handheld mic system lets you own the stage, right out of the box.