Key Features Two wireless Handheld Microphones with balanced output.Multi-channel high band anti-interrupting wave thereby eliminating interference successfully.PLL-synthesized fixed, working separately even if used even at the same time.Companding design to expand effective range.Eliminates feed-backs and noise and mostly reduces chance of interference.Perfect performance gear for church,musical concerts and many more.DH-744 wireless microphone system is a good quality wireless microphone design for users who require professional performance and budget solution. The system delivers perfect sound by using low interference UHF frequency band, and it is strong and reliable to meet various usages from large crowded show to official use. It has a long cu range of more than 100m so its the best to perform at crusades.