[Superior Sound Quality]: Wireless lavalier microphone system receives crystal clear sound and then transmits it to your smart phone or camera through UHF digital wireless technology. The recorded sound is processed by noise cancelling to restore high fidelity, and the 0s delay transmission range is 80-100 feet. UHF digital can provide a stronger signal which reducing the interference of Bluetooth or WiFi [Professional Real Time Audio Monitor]: LAUGFIN is a professional manufacturer of acoustic equipment. We strive to provide customers with the most reliable products. The receiver of our wireless lapel microphone is equipped with a real-time monitoring function. Real-time recording of sound greatly facilitates the needs of actual usage, so that you will not lose valuable voice when interviewing or recording a video