Depusheng D3 Professional Wireless Microphone Dual Portable Microphone UHF Wireless Receiver 【Product Description】 Manufacturer: DEPUSHENG Color: Black Product Model Number: D3 ・With Bluetooth wireless connection function, there are no cable restrictions, making it more convenient. The dual-channel design allows two handheld microphones to be used simultaneously without interfering with each other. ・The wireless receiver has treble, bass, and reverb controls to individually adjust the volume of each microphone, allowing you to select different microphone sound effects according to the song or scene, making the sound of the song beautiful and moving. ・This wireless microphone uses high-efficiency, low-consumption RF transmission technology, a high-sensitivity UHF narrow-band radio frequency receiver, and frequency synthesis technology, switching multiple frequency points, improving reception stability, effectively preventing cross-frequency, and having a wider range of applications. The actual distance is long, with an ideal environment of over 164 feet and a complex environment of about 32 feet.